Party-Ready Birthday Outfit Ideas For Your 21st

Turning 21 is a huge milestone moment, and making it a night to remember may be the most exciting wish to come true. Whether you’re planning to celebrate your 21st at a dinner with your family or visiting a cocktail bar or club – we want to make sure you have plenty of outfit ideas and inspirations for your special night.

Maybe you’re looking for an effortlessly chic look to wear to dinner in your honor or a head-turning sparkly bodycon dress for a night in the city. Whichever style or vibe you envision for your 21st celebration, we’ve got you covered with a curated selection of birthday outfit ideas.

Birthday Dinner Outfits For Your 21st

If spending your 21st birthday with your closest family and friends sounds like the perfect way to celebrate, we want to make sure your outfit is just as effortless and gorgeous IRL as you envisioned for this night. 

Try an elegantly chic midi dress with a surprising twist of cutouts designed at the neckline or waist for a captivating look. Or you might want to consider a matching set with a stylish crop top and skirt that’s instantly an oh-so-gorgeous outfit to help celebrate this special birthday. 

Cocktail Midi Dresses

Stylish Matching Sets

Complete your birthday outfit with a touch of sparkle and shine by layering a sparkly necklace with your cocktail dress or try multiple layers of rhinestones around your neck and wrist with a matching set. Check out our complete collection of jewelry to add the perfect finishing touch.

21st Birthday Outfits for Cocktails at the Bar

Even if you’re looking forward to a chill night at the bar with your closest friends, or you can’t wait to pop open some champagne, you’ll make a fashionable entrance in an incredibly chic going out ‘fit with jeans and sparkly top. 

This effortlessly cool look strikes a unique mix of a modern understated vibe with relaxed straight-leg jeans and a sultry bustier or slinky halter. Try styling your favorite pair of jeans with a gorgeous beaded corset top, or go sleek and pair faux leather pants instead of denim for an instantly edgy ’fit.

Sparkly Going-Out Tops

Going-Out Outfits with Jeans

Faux Leather Pants Outfit

You have arrived at the 21 and up club! Now is your chance to show this special night off by wearing a rhinestone birthday crown and sash.

Sparkly Party Dresses for Clubbing

Girls’ night out could have a new meaning now that you’re 21! You can get into the most lit club in the city or may want to travel to Sin City to catch your favorite DJ playing a set. Whether you plan to stay in town or a weekend getaway, you’ll want to make sure your party dress will be fire, like this celebration. 

A party dress in glitter knit or sequins is the perfect head-turning style that sparkles and shines with every move you make – adding an extra pop of excitement to your special night. 

You can never go wrong with a sexy LBD (Little Black Dress) for any occasion, but for your special night, why not try a sequin black dress to add a little shimmer to your birthday look? 

If you’re looking to try out a new color dress for your 21st outfit, try a white bodycon dress with iridescent sequins. The subtle rainbow glow has a dreamy and euphoric vibe that you may want to channel for that night. Or go for bold and bright by wearing a hot pink or royal blue glitter dress, fun and flirty colors that will stand out in your birthday posts. 

Which one of these glitter knit or sequin dresses can you envision wearing to your night out at the club?

White Party Mini Dresses

Black Party Mini Dresses

Red Mini Party Dresses

Pink Mini Party Dresses

We hope this curated list of 21(+1 for good luck!) stylish birthday outfits for your 21st sparks inspiration for how you want to celebrate this memorable milestone birthday.

We love a fire 21st birthday look! Don’t forget to tag your Windsor outfit with @windsorstore to your look, or use #WindsorStore on Instagram to submit your photo.