Long Mermaid Prom Dresses

Dive into the enchanting world of long mermaid prom dresses where every step you take is a swish of elegance and a splash of glam! These stunning gowns are your ticket to making a jaw-dropping entrance and leaving a trail of admirers in your wake. With their curve-hugging silhouettes and dramatic flares, you'll feel like the queen of the oceanic ball, ready to dance the night away. Whether you're channeling red carpet vibes or aiming for that fairy-tale fantasy, our collection of long mermaid prom dresses promises to make waves at any event. So go ahead, let your inner siren shine and own that spotlight like the fearless fashionista you are!

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Best Seller

$109.90 - $149.90

4.709091 star rating

A light blue mermaid dress with sequin-scroll mesh, padded bust, and lace-up back for formal events.

$109.90

4.581395 star rating

A stunning green sequin-embroidered dress with a lace-up back and mermaid silhouette for formal events.

$59.90

4.666667 star rating

A red floral mesh mermaid dress with a lace-up back, high slit, and floor-length hem.

$79.90

5 star rating

A black flocked velvet mermaid dress with a bustier bodice and adjustable spaghetti straps.

Best Seller

$109.90

4.734177 star rating

A glamorous purple sequin mermaid dress with a lace-up open back and thigh-high slit.

$74.90

4.416667 star rating

A navy blue glitter knit mermaid dress with a square neckline and lace-up open back.

Sale

$46 $64.90 29% off

4.555555 star rating

A black crepe formal dress with puff sleeves, lace-up back, and a high-cut slit.

Best Seller

$119.90

4.814815 star rating

A glamorous yellow mermaid dress featuring a sequin scroll pattern and a stunning lace-up back.

Best Seller

$69.90

4.347826 star rating

A stunning denim satin mermaid dress with a strapless sweetheart neckline and floor-sweeping hem.

$79.90

4.391305 star rating

An elegantly chic black mermaid dress with a strapless sweetheart neckline and ruffled back accent.

$99.90

4.636364 star rating

A mint sequin scroll mermaid dress with a strappy back, perfect for prom or black-tie events.

$124.90

4.45 star rating

A stunning black mermaid dress with glitter lurex fabric, V-neckline, and adjustable spaghetti straps.

$89.90

4.888889 star rating

A luxurious green knit mermaid dress featuring an off-the-shoulder neckline and dramatic high front slit.

Best Seller

$59.90

4.888889 star rating

A stunning black formal dress with a cowl neck, mermaid silhouette, and elegant lace-up back.

Sale

$39.97 $79.90 50% off

4.823529 star rating

A lavender mesh mermaid gown with faux pearl embellishments, sweetheart neckline, and adjustable straps.

$69.90

4.705883 star rating

A sage off-the-shoulder mesh dress with ruffled accents and a flattering mermaid silhouette.

$74.90

4.470588 star rating

A dazzling white mermaid dress with a glitter stretch-knit fabric and corset-style bodice.

$79.90

4.529412 star rating

A red knit mermaid dress with glitter, cowl neckline, and high front slit for formal events.

Sale

$19.97 $69.90 71% off

4.3125 star rating

A daring brown satin mermaid dress featuring a backless design, high slit, and cross-back straps.

$69.90

4.466667 star rating

A mauve glitter mermaid dress with adjustable straps and a floor-length hem for formal events.

Best Seller

$59.90

4.285714 star rating

A navy blue mermaid dress with mesh fabric, ruched seams, and adjustable spaghetti straps.

Best Seller

$64.90

4.571429 star rating

An elegant green satin mermaid dress with a lace-up back and flattering V-neckline.

Sale

$77 $109.90 30% off

4.416667 star rating

A stunning royal blue mermaid dress with sequins, adjustable straps, and a high front slit.

$74.90

4.583334 star rating

An elegant black glitter knit mermaid dress with an off-the-shoulder neckline and high front slit.

Sale

$19.97 $54.90 64% off

4.363637 star rating

A sleek black mermaid dress featuring a sheer lace one-shoulder neckline and fitted long sleeve.

$79.90

5 star rating

A stunning white mermaid dress with faux pearl embellishments and a cold shoulder neckline.

$69.90

4.454546 star rating

A pink glitter knit mermaid dress with a lace-up back and high front slit.

$89.90

4.090909 star rating

A glamorous light blue mermaid dress with glitter knit fabric, ruching, and a stylish back cutout.

$89.90

5 star rating

A glamorous black mermaid dress with rhinestone and pearl embellishments, featuring adjustable straps and cowl neckline.

$69.90

4.25 star rating

A navy blue mermaid dress with a strappy open back and sleek, stretchy knit fabric.

$59.90

5 star rating

A strapless magenta mermaid dress featuring floral mesh, a sweetheart neckline, and a draped cowl overlay.

$84.90

4.857143 star rating

A chic green mermaid dress with cutout details, sweetheart neckline, and a thigh-high side slit.

$99.90

4.833334 star rating

A sage mermaid formal dress featuring a halter V-neckline and elegant tie-back design.

$64.90

4.666667 star rating

A sultry red glitter knit mermaid dress with ruched detailing and a high front slit.

$84.90

4.833334 star rating

A black satin glitter mermaid dress with a cowl neck, adjustable straps, and a high front slit.

$84.90

4.8 star rating

An enchanting black mermaid dress with glitter mesh, ruffle-back, and adjustable spaghetti straps.

$119.90

4.2 star rating

A stunning pink mermaid dress with sequin beaded embroidery and a satin strapless pleated neckline.

$69.90

4.4 star rating

A brown mermaid formal dress featuring a halter V-neckline and open back in smooth knit fabric.

$64.90

4.6 star rating

A green knit mermaid dress with a cowl neckline, spaghetti straps, and a high front slit.

$69.90

4.75 star rating

A wine-colored glitter crepe mermaid dress with a cutout bodice and high front wrap slit.

$79.90

4 star rating

A chic black mermaid dress featuring a sheer mesh corset bodice and adjustable crisscross straps.

$49.90

4.75 star rating

A chic yellow knit mermaid dress with a cowl neckline and adjustable spaghetti straps for formal events.

$64.90

3.75 star rating

A wine-colored mermaid dress with glitter knit, cowl neckline, and lace-up cross-back design.

Sale

$63 $89.90 30% off

3.75 star rating

A green sequin mermaid dress with a boho pattern, adjustable straps, and a floor-length hem.

$89.90

4.25 star rating

A denim lace formal dress featuring a corset bodice, mermaid silhouette, and glitter lace fabric.

$59.90

4 star rating

A mauve mesh mermaid dress with a sweetheart neckline, lace-up back, and elegant ruching.

$79.90

5 star rating

A glamorous gold satin mermaid dress with a sweetheart neckline and adjustable spaghetti straps.

$74.90

3.75 star rating

A black glitter knit mermaid dress with a halter neckline and high front wrap slit.

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Long Mermaid Prom Dresses
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Windsor Rowena Sequin Mermaid Dress in Purple
(159) 4.716981 star rating

Chic and glamorous, the Rowena sequin mermaid long dress will stylishly elevate your formal night-out look. With a lace-up strap design and fitted mermaid silhouette with a high slit, you'll deliver stunning style. Fit & FeaturesSheer mesh fabric, knit lining, moderate stretch, embroidered sequin scroll design, Sleeveless square neckline, padded bust, Spaghetti straps, open back, lace-up strap design, tie closure, Lower back zipper with hook and eye closure, High waist seam, Fitted floor-length mermaid silhouette, high front slit, Runs true to size, Where to Wear:Prom, black-tie parties and galas, fancy engagement parties Free Shipping on All Orders Over $75. | Windsor Rowena Sequin Mermaid Dress in Purple | Size: S | Knit Fabric/Mesh Fabric/Sheer Mesh Fabric

Windsor Lola Formal High Slit Glitzy Glitter Dress in Navy Blue
(59) 4.4576273 star rating

Flaunt your glam style in the fabulous Lola high slit glitter dress! She features a trendy cowl neckline with a slim-fit bodice, a floor-sweeping silhouette with a sultry high side slit to elongate your legs, and a form-hugging fit. She is composed of glitzy glitter knit fabric that offers a curve-hugging fit with a moderate stretch. Pair this gorgeous long dress with a sleek ring set to add some glamour to your look for your special occasion. Fit & FeaturesCowl neckline, spaghetti straps, Slim-fit bodice, form-hugging fit, Floor-length silhouette, Thigh-high side slit, Glitter knit fabric, mini-length inner knit lining, moderate stretch, Sticky bra recommended, Runs true to size, The saturation of glitter varies. Glitter may transfer. Free Shipping on All Orders Over $75. | Windsor Lola Formal High Slit Glitzy Glitter Dress in Navy Blue | Size: L | Knit Fabric

Windsor Sophie Glitter Knit Mermaid Dress in Navy Blue
(36) 4.4166665 star rating

Effortlessly elegant, the Sophie glitter knit mermaid dress would be a stunning choice for a formal gala. She features a square neckline, short puff sleeves, a partially open back with a lace-up strappy design for a customized fit, a high waist seam, a floor-length hem, and a mermaid silhouette with a high front slit to showcase your heels. The glitter knit fabric offers a moderate stretch. Complete the look in this long dress with rhinestone statement earrings. Fit & FeaturesSquare neckline, Short puff sleeves, Open back, lace-up strappy design, tie closure, High waist seam, Floor-length hem, mermaid silhouette, front slit, Glitter knit fabric, moderate stretch, Sticky bra or pasties recommended, Runs true to size, Free Shipping on All Orders Over $75. | Windsor Sophie Glitter Knit Mermaid Dress in Navy Blue | Size: XS | Knit Fabric/Rhinestone

Lucille Formal Satin Mermaid Dress in Coral
(29) 4.827586 star rating

The Lucille formal satin dress will have you looking and feeling radiant and luxe! The dress captivates with a lace-up back, mermaid silhouette, and high front slit for effortless allure. Fit & FeaturesLined satin knit fabric, minimal stretch, Sleeveless square neckline, padded bust, adjustable spaghetti straps, Open lace-up back design, zipper and hook-eye closure, Fitted bodice, front ruched seam, high-cut slit, Mermaid silhouette, floor-length hem, Runs true to size, Where to Wear:Prom, weddings, bridesmaids, black tie galas, red-carpet events, nights at the opera or theatre, big milestone celebrations Free Shipping on All Orders Over $75. | Windsor Lucille Formal Satin Mermaid Dress in Coral | Size: L | Knit Fabric/Satin Fabric

Windsor Gwendolyn Glitter Knit Bow-Back Mermaid Dress in Light Blue
(23) 4.478261 star rating

The Gwendolyn glitter knit bow-back mermaid dress will have you sparkling up the night with a glamorous allure. She features a sleeveless square neckline, a bold backless design, a high waist seam, a chic bow accent at the lower back with a flowy floor-length train, a floor-sweeping hem with a mermaid silhouette, and a form-hugging fit. Style this long dress with a rhinestone clutch for a black-tie wedding. Fit & FeaturesSleeveless square neckline, spaghetti straps, Backless design, high waist seam, Bow-back accent, floor-length train, Floor-sweeping hem, mermaid silhouette, Form-hugging fit, Glitter knit fabric, Sticky bra or pasties recommended, Runs true to size, Free Shipping on All Orders Over $75. | Windsor Gwendolyn Glitter Knit Bow-Back Mermaid Dress in Light Blue | Size: L | Knit Fabric/Rhinestone

Priscilla Formal Satin Strapless Mermaid Dress in Red
(23) 4.347826 star rating

Make it an elegant entrance in the Priscilla formal satin dress with a curve-hugging mermaid silhouette and floor-sweeping hem for dramatic flair. Fit & FeaturesLined silky satin fabric, minimal stretch, Strapless sweetheart neckline, Pleated, lightly padded bust, non-slip grip lining, Slim-fit bodice, high waist seam, hip-hugging fit, Floor-sweeping hem, mermaid silhouette, Runs true to size, Where to Wear:Prom, weddings, bridesmaids, black-tie galas and events, and fancy milestone celebrations. Free Shipping on All Orders Over $75. | Windsor Priscilla Formal Satin Strapless Mermaid Dress in Red | Size: S | Satin Fabric

Windsor Kathie Formal Satin One-Shoulder Dress in Gold
(21) 4.7619047 star rating

Sleek and sultry, the Kathie formal satin dress is destined to shine at banquets, galas, and black-tie weddings! She features a sophisticated one-shoulder neckline, a wide shoulder strap, a pleated side seam, a mermaid silhouette, and an asymmetrical high front slit along her graceful long hem. The formal dress is composed of luxurious satin-lined fabric with a sheen effect and minimal stretch. Complete the look with hoop earrings. Fit & FeaturesOne-shoulder neckline, wide shoulder strap, Back zipper and hook-eye closure, Pleated side seam, asymmetrical high front slit, Mermaid silhouette, long hem, Lined silky satin fabric, sheen effect, minimal stretch, Strapless bra or pasties recommended, Runs true to size, Free Shipping on All Orders Over $75. | Windsor Kathie Formal Satin One-Shoulder Dress in Gold | Size: XS | Satin Fabric

Shay Formal Lurex Glitter Dress in Black
(20) 4.45 star rating

Stun in the Shay formal glitter dress that makes your entrance that much more glam! Shay features a mermaid silhouette that flaunts your beautiful curves and a floor-length hem for a hint of drama. Fit & FeaturesLine glitter lurex fabric, V-neckline, padded bra cups, Adjustable spaghetti straps, Ruching, mermaid silhouette, Wide banded hem, train , Runs true to size, Extra glitter for maximum sparkle - may have some natural fallout , Where to Wear: Prom, black tie galas and events, red-carpet events, upscale birthdays Free Shipping on All Orders Over $75. | Windsor Shay Formal Lurex Glitter Dress in Black | Size: XL

Windsor Alicia Off-The-Shoulder Mermaid Formal Dress in Green
(18) 4.888889 star rating

Spend an evening in the timeless elegance of the Alicia floor-length formal dress and feel like a work of art! The side ruched seams accentuate your curves along the mermaid silhouette, and the high front slit adds a touch of drama to the floor-length hem. Fit & FeaturesSmooth knit fabric lined with stretchy knit, Padded bra cups, Back zipper and hook-eye closure, High front slit, Mermaid silhouette, Runs true to size, Where to Wear:Prom, galas, black tie parties, weddings, bridesmaids, nights at the theatre and opera, red-carpets Free Shipping on All Orders Over $75. | Windsor Alicia Off-The-Shoulder Mermaid Formal Dress in Green | Size: XS | Knit Fabric

Windsor Deyna Formal Mesh Off-The-Shoulder Long Dress in Sage
(18) 4.7222223 star rating

Radiate sexy elegance in the Deyna formal long dress perfect for your upcoming black tie soirees! The dress accentuates your curves with side ruched seams and mermaid silhouette create a stunning and flattering shape, while the floor-length hem adds sophistication. Fit & FeaturesAiry mesh fabric, full knit stretchy lining, Off-the-shoulder neckline, ruffled cuffs, cascading ruffles, Back zipper and hook-eye closure, Flexible boning inserts in the bodice, Side ruched seams, mermaid silhouette, floor-length hem, Runs true to size, Where to Wear:Prom, weddings, fancy garden parties, dressed up events Free Shipping on All Orders Over $75. | Windsor Deyna Formal Mesh Off-The-Shoulder Long Dress in Sage | Size: L | Knit Fabric/Mesh Fabric/Mesh Fabric