What Should I Wear to an Underwear Party? An Expert Guide

Underwear parties are all about confidence, self-expression, and having fun. Whether it’s your first time or you’re a seasoned partygoer, what you wear can make or break your night. From silhouettes that flatter to colors that pop under blacklight, your underwear is more than clothing—it’s a tool for confidence and self-expression. As someone who throws underwear parties in New York City and attends multiple underwear parties each season in Fire Island, I’ve learned that the right underwear can elevate your experience and help you stand out.

Choose the Right Silhouette

In my experience, there are three silhouettes that shine at underwear parties: jockstraps, briefs, and trunks.

• Jockstraps – Want to turn heads? Go with a jockstrap. It’s the ultimate way to show off your body and grab attention, especially from other guys. If you’re peacocking, this is your move.

• Briefs – The classic sexy option. Small enough to feel liberating, show off your physique, but still provide coverage. Perfect for a confident, balanced look.

• Trunks – A slightly more modest option than briefs, trunks give a short-leg, clean silhouette. Anything with more fabric than these three tends to feel bulky and less party-ready.

Fit, Material, and Confidence

Comfort is key—but at an underwear party, fashion wins over function. You want to feel sexy, liberated, and confident in your outfit. The right fit hugs your body in all the right places and moves naturally, so you can focus on having fun.

If you want to stand out under blacklights, BADBUI is perfect. Our signature black underwear with a touch of neon yellow glows under UV light, making you instantly recognizable and eye-catching. It’s not just about looking good—it’s about being memorable.

Color, Patterns, and Accessories

Your underwear is a statement. Wear what makes you happy and reflects your personality. Bright colors, bold patterns, or classic neutrals can all work—what matters is that it expresses who you are.

Accessories are key at underwear parties since pockets are limited. Consider:

• A fanny pack or small crossbody bag for essentials like your phone, wallet, or chapstick

• Tube Socks can be used as pockets

• Fun accents like hats, necklaces, or bracelets to complete your look

Accessories aren’t just functional—they add personality and style to your outfit.

Consider the Crowd

Most underwear parties are gay events, so the goal is to look your best and feel confident. Jockstraps are the ultimate attention-getters in these spaces.

For mixed or more casual crowds, briefs or trunks are a safer, stylish choice. Boxer briefs are less common but can work for guys seeking comfort with a slightly longer leg. Always consider the vibe and dress in a way that feels both appropriate and confident.

Avoid Common Style Mistakes

One of the biggest mistakes I see is worn-out or faded underwear. A droopy butt, stretched waistband, or faded color kills the look.

Invest in a fresh pair—it’s worth it! New underwear shows confidence, attention to detail, and respect for yourself and the party. Your outfit should feel like it was made for this moment.

The Bottom Line

At an underwear party, confidence is everything. Choose a silhouette that flatters you, colors that enhance your skin tone, patterns that express you, and accessories that complete the look. Make sure your underwear is fresh and in good shape—nothing distracts from your look like worn-out fabric.

Whether you’re peacocking in a jockstrap, keeping it classic with briefs, or choosing modest trunks, your underwear is your statement. Wear it with confidence, and the party will notice.

And if you want something that glows under blacklight, shows off your physique, and makes you instantly recognizable, BADBUI’s collection is designed exactly for nights like these.

Your underwear isn’t just underwear—it’s your statement, your confidence, your expression. Make it count. 

Read more about what makes up the most comfortable underwear.