Long Formal Dresses
Long formal dresses are the ultimate choice for black-tie events, formal dances, and weddings. Choose from mermaid-style, A-line gowns, or modern sheath designs, made with luxurious fabrics like velvet, satin, and glitter mesh. Sequins and rhinestones add a touch of glam, while long sleeves, off-the-shoulder, strapless, and open-back details offer a range of stunning options for any occasion.
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MOST POPULAREmbrace the Season in Stunning Long Formal Dresses for Every Celebration
Embrace the season with Windsor’s captivating collection of long formal dresses, designed to make a statement in the season's most stunning colors. Whether you’re attending a holiday gala, a winter engagement party, or a formal family gathering, find styles that range from sleek mermaid gowns to timeless A-line silhouettes in colors perfect for every occasion.
Explore long formal dresses in vibrant seasonal shades, like deep reds that bring warmth to holiday gatherings, elegant greens that feel festive and classic, and sparkling silvers that add a touch of glamour. For those who love to stand out, rich purples offer a luxurious look, while crisp whites bring a fresh, timeless appeal. Each color adds its own flair to the season, allowing you to embrace the hues that feel most "you."
Our long formal dresses are not only beautiful—they’re designed with comfort and practicality in mind. Many styles feature functional details like side pockets, adjustable straps, and high-quality fabrics that will make these dresses a favorite for seasons to come. Choose from flowing maxis, chic midis, or structured trumpet gowns, all tailored to flatter any figure and suit your unique style.
For added elegance, discover semi-formal dresses featuring unique details like lace-up backs, thigh-high slits, or delicate embroidery in these festive colors—ideal for holiday parties, winter weddings, or upscale dinners.
Complete your look with on-trend necklines such as off-the-shoulder, square, or high necks, and add a touch of sparkle with rhinestone accessories to match any color you choose. Step confidently into every event, knowing you’re dressed to impress.
Browse Windsor’s collection of long formal dresses in all the season’s beautiful colors, available in-store or online, and find pieces that will elevate your wardrobe for every special occasion!
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Gabrielle Formal Sequin Long Dress
Special Occasion
You'll shine in head-to-toe sequins on the Gabrielle formal dress stunning for wedding guests, charity dinners, and dances! She features a sleeveless cowl neckline, adjustable spaghetti straps for a customizable fit, a lace-up back, and a form-hugging mermaid silhouette with a skin-flaunting slit and long hem. The formal dress is composed of a sequin-embroidered mesh fabric with a stretchy knit lining. Style with a silver clutch and heels to complete the look!
Fit & Features
- Sleeveless cowl neckline, adjustable spaghetti straps
- Lace-up back, zipper and hook-eye closure
- Form-hugging, mermaid silhouette
- Front slit, floor-length hem
- Sequin-embroidery, mesh fabric, stretchy knit lining
- Strapless or sticky bra recommended
- Runs true to size
Style Number/Barcode: 05002-2975
Category Name: Long Formal Dresses
Price: $49.97 $109.90
On Sale: Yes
Availability: Out of Stock
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Eris Formal Sequin Scroll Dress
Special Occasion
Walk into the room in a formal dress that brings the glamour to your special event. Eris features a sequin scroll pattern, a one-shoulder neckline with a supportive tank shoulder strap, padded cups that provide additional support, and a slim-fit waist. The waist leads to a floor-length form-hugging silhouette that is accented with a high side slit. The dress is composed of a lined mesh fabric that offers minimal stretch. Complete the look with rhinestone heels and a clutch.
Fit & Features
- One-shoulder neckline, tank shoulder strap
- Padded cups
- Sequin scroll pattern
- High waist, back zipper closure
- Slim-fit form-hugging silhouette, high side slit
- Lined mesh fabric, minimal stretch
- Runs true to size
Style Number/Barcode: 05002-1832
Category Name: Long Formal Dresses
Price: $39.97 $89.90
On Sale: Yes
Availability: Out of Stock
Product Badge:- Sale
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Samantha Formal Crepe Slit Dress
Special Occasion
Embody classic Old Hollywood glamour in the Samantha formal long dress destined to be your plus one for red-carpet events and cocktail parties! She features an off-the-shoulder, sweetheart neckline with short-sleeve cuffs, and a front-side ruched seam and high-cut slit to accentuate your curves and show some skin along her mermaid silhouette. The formal dress is composed of a stretch crepe-lined fabric. Style with statement earrings and a choker to complete your dressy look!
Fit & Features
- Off-the-shoulder, sweetheart neckline
- Short-sleeve cuffs
- Front-side ruched seam, high-cut slit
- Mermaid silhouette
- Floor-length hem
- Lined crepe fabric, moderate stretch
- Strapless or sticky bra recommended
- Runs true to size
Style Number/Barcode: 05002-2812
Category Name: Long Formal Dresses
Price: $9.97 $59.90
On Sale: Yes
Availability: Out of Stock
Product Badge:- Sale
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Blair Lace-Up A-Line Rhinestone Formal Dress
Special Occasion
Draw everyone's eyes in your direction at Homecoming in the stunning and glamorous Blair rhinestone formal dress! She features a sleeveless V-neckline, spaghetti straps, an open back with an alluring lace-up strappy design for a customized fit, a gorgeous floor-sweeping hem with an A-line silhouette, and all-over rhinestone embellishments that taper off toward the hem. The lined mesh fabric offers a moderate stretch. Complete the look with a rhinestone jewelry set to style with the maxi formal dress.
Fit & Features
- Sleeveless V-neckline, spaghetti straps
- Open back, lace-up strappy design, tie closure
- Floor-length hem, A-line silhouette
- All-over rhinestone embellishments, taper off toward the hem
- Sheer mesh fabric, full knit lining, moderate stretch
- Sticky bra recommended
- Runs true to size
Style Number/Barcode: 05002-2910
Category Name: Long Formal Dresses
Price: $99.90
Availability: In Stock
Available Color: FUCHSIA
Available Size: S, M, L
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Mirabel Satin Corset High Slit Formal Dress
Special Occasion
Bring the luxe look with a formal dress that puts you on the A-list! Mirabel features a sleeveless square neckline with pleated detailing, flexible piping at the bodice, spaghetti straps, and a floor-length, curve-hugging silhouette with an alluring high side slit to showcase some leg. The dress is composed of a smooth satin-knit fabric that offers moderate stretch. Complete the look with rhinestone heels and a rhinestone bracelet for your next fancy gala.
Fit & Features
- Sleeveless square neckline, pleated detailing
- Flexible piping at the bodice
- Spaghetti straps
- Floor-length hem, form-hugging silhouette
- Thigh-high side slit
- Satin-knit fabric, bust lining, moderate stretch
- Strapless or sticky bra recommended
- Runs true to size
Style Number/Barcode: 05002-1382
Category Name: Long Formal Dresses
Price: $29.97 $59.90
On Sale: Yes
Availability: Out of Stock
Product Badge:- Sale
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Heather Ruched High-Slit Formal Dress
Special Occasion
All eyes will be on you as you stun in the gorgeous Heather formal dress! She features a sleeveless V-neckline, spaghetti straps that lead to a cross-back lace-up design, back ruched detailing, and a floor-length curve-hugging silhouette with a sexy thigh-high side slit. Style this dress with rhinestone earrings and new heels.
Fit & Features
- Sleeveless V-neckline
- Spaghetti straps
- Cross-back lace-up design
- Back ruched detailing
- Floor-length silhouette, high side slit
- Form-hugging fit
- Runs true to size
Style Number/Barcode: 05002-1333
Category Name: Long Formal Dresses
Price: $19.97 $49.90
On Sale: Yes
Availability: Out of Stock
Product Badge:- Sale
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Shay Formal Lurex Glitter Dress
Special Occasion
Stun in a formal maxi dress that makes your entrance that much more glam! Shay features a beautiful glitter lurex body that shimmers from all your best angles, a sleeveless V-neckline with padded cups, adjustable spaghetti straps, and a ruching throughout to enhance and flatter curves. Her slim-fit waist leads to a mermaid silhouette accented with a wide-banded hem and train. She is composed of a lined glitter lurex fabric that offers a form-hugging fit with a moderate stretch. Complete your look with this long dress with rhinestone heels and a glitter clutch.
Fit & Features
- Sleeveless V-neckline
- Padded cups, adjustable spaghetti straps
- Ruching, mermaid silhouette
- Wide banded hem, train
- Lined glitter lurex fabric, moderate stretch
- Runs true to size
- Please note glitter saturation may transfer
Style Number/Barcode: 05002-2346
Category Name: Long Formal Dresses
Price: $24.97 $124.90
On Sale: Yes
Availability: Out of Stock
Product Badge:- Sale
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Becka Formal Mesh High Slit Long Dress
Special Occasion
Elevate your wardrobe with this chic Becka formal long dress for fancy soirees! Crafted from sheer mesh fabric for a luxurious look, the long dress features sheer long bell sleeves, a square neckline, and a slim silhouette that hugs your curves. The high-side slit allows you to move with ease, while the stretchy knit lining ensures comfort. Take your formal style to the next level with this exquisite piece. Complete the look with a sparkly hair accessory and heels.
Fit & Features
- Sheer mesh long bell sleeves
- Square neckline
- Curve-hugging, slim silhouette
- High side slit, long hem
- Mesh fabric, sewn-in knit lining, moderate stretch
- Bra friendly design
- Runs true to size
Style Number/Barcode: 05002-7710
Category Name: Long Formal Dresses
Price: $54.90
Availability: In Stock
Available Color: BLACK, BURGUNDY
Available Size: XS, S, M, L, XL
Product Badge:- Best Seller
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Gracie Formal Velvet Side Slit Dress
Special Occasion
A luxe style with gorgeous details, the Gracie formal dress will take everyone's breath away! She stuns in a one-shoulder neckline with a long sleeve, a sexy cutout bust, and a form-hugging silhouette with a high-cut side slit long hem. The formal dress is composed of a soft velvet-knit fabric with sewn-in lining and moderate stretch. Complete your classy look in sparkling heels for winter formal and holiday parties!
Fit & Features
- One-shoulder neckline, long sleeve
- Cutout bust accent
- Form-hugging silhouette
- High-cut side slit, long hem
- Stretch velvet-knit fabric, sewn-in lining
- Sticky bra or pasties recommended
- Runs true to size
Style Number/Barcode: 05002-7369
Category Name: Long Formal Dresses
Price: $29.97 $49.90
On Sale: Yes
Availability: Out of Stock
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Octavia Formal A-Line Crepe Dress
Special Occasion
For those unforgettable nights stun in a formal long dress that creates a perfect snap-shot moment! Octavia features an off-the-shoulder neckline with a luxe fold-over accent, a high-fitted waist, an asymmetrical high side slit on the right leg, and an A-line silhouette. Octavia is composed of a lined crepe fabric that offers a form-hugging fit with a moderate stretch. Complete the outfit with an adhesive bra and shapewear to achieve that sleek look.
Fit & Features
- Off-the-shoulder neckline, fold-over accent
- Asymmetrical high side slit on the right leg
- High waist
- A-line silhouette, form-hugging fit
- Lined crepe fabric, moderate stretch
- Strapless or sticky bra friendly
- Runs true to size
Style Number/Barcode: 05002-1931
Category Name: Long Formal Dresses
Price: $19.97 $54.90
On Sale: Yes
Availability: Out of Stock
Product Badge:- Sale
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Marsha Formal Satin Tie Back Dress
Special Occasion
Impress every guest at prom in the stunning Marsha formal satin dress designed to captivate in her stunning silhouette with sultry details! She features a classy sleeveless V-neck, spaghetti straps, and an eye-catching open back with a tie-back design perfect for showcasing some skin. Her figure-flattering mermaid silhouette flaunts your curves while elongating in the floor-length hem. The formal dress is composed of silky stretch-satin fabric with a luxe finish. Complete your prom look in glitter heels and a clutch.
Fit & Features
- Sleeveless V-neckline, spaghetti straps
- Adhesive bra recommended
- Open back, tie-back strap design
- Figure-flattering mermaid silhouette
- Floor-length hem
- Silky stretch-satin fabric
- Runs true to size
Style Number/Barcode: 05002-2213
Category Name: Long Formal Dresses
Price: $24.97 $64.90
On Sale: Yes
Availability: Out of Stock
Product Badge:- Sale
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Noemi Formal Sequin A-Line Dress
Special Occasion
Shimmering sequins make a debut on the Noemi formal dress to make your sparkling appearance at school dances, banquet dinners, and black tie events! She features a sleeveless square neck, adjustable spaghetti straps, and a flattering A-line silhouette that leads to the floor-length hem that gracefully kisses the floor with step. The formal dress is composed of a sequin-scroll patterned mesh fabric with a stretchy knit lining. Complete the look with statement earrings.
Fit & Features
- Sleeveless square neck, adjustable spaghetti straps
- Back zipper and hook-eye closure
- A-line silhouette
- Floor-length hem
- Sequin-scroll pattern, mesh fabric, stretchy knit lining
- Bra friendly design
- Runs true to size
Style Number/Barcode: 05002-3161
Category Name: Long Formal Dresses
Price: $9.97 $109.90
On Sale: Yes
Availability: Out of Stock
Product Badge:- Sale
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Gretchen Formal Lace-Up Dress
Special Occasion
Lace-up in a formal long dress that brings the wow factor to your evening! Gretchen features a sleeveless square neckline, sleek spaghetti straps, lace-up straps at the back, and a high-side slit. The dress is composed of a smooth knit fabric that offers a form-hugging fit with a moderate stretch. Complete look with rhinestone heels and a metal cuff.
Fit & Features
- Sleeveless square neckline, padded cups
- Spaghetti straps
- Lace-up straps at back
- High side slit
- A-line silhouette
- Smooth knit fabric, form-hugging fit, moderate stretch
- Runs true to size
Style Number/Barcode: 05002-1388
Category Name: Long Formal Dresses
Price: $9.97 $64.90
On Sale: Yes
Availability: Out of Stock
Product Badge:- Sale
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Bethany Formal Sequin Slit Long Dress
Special Occasion
You'll be dripping in countless sparkling sequins in the Bethany formal dress destined to shine at rehearsal dinners, banquets, and dances! She features a sleeveless square neck, adjustable spaghetti straps for a customizable fit, a padded bust, and a form-hugging slim silhouette that leads to her floor-length hem. The formal dress is composed of a sequin-scroll pattern mesh fabric with a stretchy smooth knit lining. Complete the look with a chic bracelet and envelope clutch!
Fit & Features
- Sleeveless square neck, adjustable spaghetti straps
- Padded bust, bra optional
- Back zipper closure
- Form-hugging, slim silhouette
- Floor-length hem
- Sequin-scroll pattern, mesh fabric, stretchy knit lining
- Runs true to size
Style Number/Barcode: 05002-7166
Category Name: Long Formal Dresses
Price: $9.97 $99.90
On Sale: Yes
Availability: Out of Stock
Product Badge:- Sale
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Aliza Backless High Slit Slim-Fit Formal Dress
Special Occasion
Make them all do a double-take as you make a glam entrance in the gorgeous Aliza formal dress! She features a sleeveless square neckline, thin tank shoulder straps, an alluring backless design with lower tie-back straps in a chic bow accent, ruching down the side seams, a floor-length hem with a thigh-high side slit to showcase some leg, and a slim-fit silhouette to highlight your figure. The smooth knit fabric offers plenty of stretch. Complete your homecoming look with sparkling rhinestone-embellished heels.
Fit & Features
- Sleeveless square neckline, thin tank shoulder straps
- Backless design, lower tie-back straps, bow accent
- Side ruching, floor-length hem, thigh-high side slit
- Slim-fit silhouette
- Smooth knit fabric, knit lining at the bust, plenty of stretch
- Sticky bra or pasties recommended
- Runs true to size
Style Number/Barcode: 05002-8532
Category Name: Long Formal Dresses
Price: $56.90
Availability: In Stock
Available Color: NAVY, HUNTER, PINK
Available Size: S, XS, M, L
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Maxine A-Line Tulle Dress
Special Occasion
Waltz your way in and make a magical entrance with our stunning Maxine formal dress! She features adjustable spaghetti straps that lead to a cross back design, a padded bust with subtle pleated detailing, a V neckline with a sheer lace inset at the center, and a back zipper and hook and eye closure. Her high waist flows to a floor-length tulle skirt with a pretty A-line silhouette. The sheer tulle fabric has a stretchy knit lining. Complete your gorgeous look with a sleek clutch.
Fit & Features
- Adjustable spaghetti straps that lead to a cross back design
- Padded bust
- V neckline with a sheer lace inset
- High waist
- Back zipper and hook and eye closure
- Floor-length, A-line silhouette
- Sheer tulle fabric with a knit lining
Style Number/Barcode: 05002-0598
Category Name: Long Formal Dresses
Price: $19.97 $46.90
On Sale: Yes
Availability: Out of Stock
Product Badge:- Sale
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Vicky Formal Lace Corset Dress
Special Occasion
Sparkly glitter adds a glam factor to the Vicky formal dress perfect for your next dressy evening! She features a sleeveless, sweetheart neck, bungee spaghetti straps, and a built-in padded bust atop a sheer lace bodice with flexible boning for a structured fit. Her high waist seam leads to an A-line silhouette with a sexy front slit and a floor-length hem. The formal dress is composed of a glitter lace overlay with inner lining and a minimal stretch. Complete your fancy look in a glam necklace set.
Fit & Features
- Sleeveless, sweetheart neck, bungee spaghetti straps
- Built-in padded bust, bra optional, back zipper closure
- Sheer lace bodice, flexible boning inserts
- High waist seam, A-line silhouette
- Front slit, floor-length hem
- Glitter lace overlay, inner lining, minimal stretch
- Runs true to size
Style Number/Barcode: 05002-2408
Category Name: Long Formal Dresses
Price: $89.90
Availability: In Stock
Available Color: BLACK
Available Size: 1, 3, 5, 7, 9, 11, 13
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Denice Corset A-Line Wrap Formal Dress
Special Occasion
You're not wrong for wanting to glow this prom season! The Denice Corset A-Line Wrap Formal dress will have you feeling sparkly all night. She features a sleeveless cowl neck, adjustable spaghetti straps that let you customize her fit, and a corset-style bodice with flexible boning. Keep your hands warm in the hidden side pockets. Her empire waist leads to the A-line, floor-length silhouette on a shimmering glitter satin-lined fabric with no stretch. Complete the look in platform heels.
Fit & Features
- Cowl neckline, adjustable spaghetti straps
- Wrap front, back zipper, hook and eye closure, side pockets
- Corset waist, flexible boning
- A-line silhouette, floor-length hem
- Glitter fabric, satin lining
- Flowy fit, no stretch
- Strapless or sticky bra recommended
- Runs true to size
Style Number/Barcode: 05002-2011
Category Name: Long Formal Dresses
Price: $19.97 $119.90
On Sale: Yes
Availability: Out of Stock
Product Badge:- Sale
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Sloane Satin Corset Formal Dress
Special Occasion
Sexy and sophisticated, the Sloane satin dress is perfect for your next formal event. She features a sleeveless V-neckline, thin shoulder straps, a corset-designed bodice with pleated detailing and flexible boning, a lower back cutout leading to ruching, and a fitted, floor-length silhouette. The smooth satin fabric offers a moderate stretch. Style with rhinestone statement earrings.
Fit & Features
- Sleeveless V-neckline, thin shoulder straps
- Sticky bra recommended
- Corset-designed bodice, pleating, flexible boning
- Back zipper and hook-eye closure, lower back cutout, lower back ruching
- Form-hugging fit, floor-length silhouette
- Satin fabric, moderate stretch
- Runs true to size
Style Number/Barcode: 05002-7859
Category Name: Long Formal Dresses
Price: $19.97 $84.90
On Sale: Yes
Availability: Out of Stock
Product Badge:- Sale
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Whittney Strapless High Slit Formal Dress
Special Occasion
Captivating yet subtle details create the eye-catching Whittney formal crepe dress perfect for fancy parties, cocktail events, and galas! She stuns in a classic strapless square neckline with a padded bust, a fitted bodice, and a pleated side seam that creates the illusion of an hourglass figure. Her curve-hugging, slim-fit silhouette offers a show of skin in a high-cut front slit and a long-length hem that gracefully sweeps along the floor. Complete your dressy look in this formal long dress with earrings and simple block heels!
Fit & Features
- Strapless square neckline, built-in padded bust
- Fitted bodice
- Side pleated seam, high-cut front slit
- Curve-hugging, slim-fit silhouette, long-length hem
- Crepe fabric, lined bust, moderate stretch
- Bra optional
- Runs true to size
Style Number/Barcode: 05002-3178
Category Name: Long Formal Dresses
Price: $29.97 $39.90
On Sale: Yes
Availability: Out of Stock
Product Badge:- Sale
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Emmie Formal Sequin One-Shoulder Dress
Special Occasion
Serve up shimmering sultriness in the Emmie formal sequin dress for your next elegant event! She features a one-shoulder neckline, a long sleeve, a cutout waist, and a form-hugging mermaid silhouette on a floor-length hem. The formal dress is composed of a sequin-knit fabric with lining and minimal stretch. Complete your dazzling look in fringe earrings.
This dress is the perfect pick for Prom 2023! Not exactly your style? You’ll love other prom dresses.
Fit & Features
- One-shoulder neckline, long fitted sleeve
- Cutout waist
- Back zipper, hook and eye closure
- Form-hugging, mermaid silhouette
- Floor-length hem
- Sequin-knit fabric, lining, minimal stretch
- Strapless or sticky bra recommended
- Runs true to size
Style Number/Barcode: 05002-7009
Category Name: Long Formal Dresses
Price: $19.97 $74.90
On Sale: Yes
Availability: Out of Stock
Product Badge:- Sale
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Layne Off-The-Shoulder Mermaid Formal Dress
Special Occasion
Flaunt your figure and showcase your stunning curves in the Layne mermaid formal dress, perfect for weddings! Bare your shoulders in her off-the-shoulder neckline with a fold-over design that shapes the fitted bodice leading to a form-hugging mermaid silhouette. She features ruched side seams and a floor-sweeping hem. Composed of sleek and smooth knit fabric with plenty of stretch. Style this formal long dress with rhinestone hoops.
Fit & Features
- Off-the-shoulder neckline, fold-over design
- Empire waist, fitted bodice
- Ruched side seams
- Floor-sweeping hem, mermaid silhouette
- Stretchy smooth knit fabric
- Strapless bra recommended
- Runs true to size
Style Number/Barcode: 05002-1885
Category Name: Long Formal Dresses
Price: $29.97 $46.90
On Sale: Yes
Availability: Out of Stock
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Jenna Formal Glitter Lattice Dress
Special Occasion
Glitter amplifies the sparkling radiance of the Jenna formal dress for your next fancy night out! She features a sleeveless scoop neck with sleek bungee spaghetti straps, an open back with lattice detailing, a high-waist seam, and a curve-hugging, floor-length hem with a sexy high-cut slit. The formal dress is composed of a stretch-knit glitter fabric that hugs your body like an hourglass. Complete the look with a statement bracelet and clutch.
Fit & Features
- Sleeveless scoop neck, bungee spaghetti straps
- Sticky bra recommended
- Open-back with lattice detail
- High-waist seam
- Curve-hugging, floor-length hem, high-cut side slit
- Glitter knit fabric, lined, moderate stretch
- Runs true to size
Style Number/Barcode: 05002-2603
Category Name: Long Formal Dresses
Price: $59.90
Availability: In Stock
Available Color: BLACK
Available Size: XS, S, M, L
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Kailey Formal Lace-Up A-Line Dress
Special Occasion
Lace-up in a glam formal dress that makes creates an enchanting entrance! Kailey features a sleeveless cowl neckline, adjustable spaghetti straps that lead to the lace-up back, and a flowy A-line silhouette accented with hidden side pockets. The dress is composed of lined satin fabric with minimal stretch. Complete look with rhinestone heels and an anklet.
Fit & Features
- Sleeveless, cowl neckline, adjustable spaghetti straps
- Adhesive bra recommended
- Lace-up back with tie closure
- A-line silhouette, hidden side pockets
- Floor-length hem
- Lined satin fabric, minimal stretch
- Runs true to size
Style Number/Barcode: 05002-2398
Category Name: Long Formal Dresses
Price: $19.97 $109.90
On Sale: Yes
Availability: Out of Stock