Adult Unisex Costumes

Adults Unisex Fancy Dress Costumes

Discover our range of adults unisex fancy dress costumes, perfect for parties, festivals, Halloween and themed events. These gender-neutral outfits are designed to suit everyone, making them ideal for group themes, last-minute plans and easy, throw-on transformations.

Costumes for everyone

From classic prison jumpsuits and boiler suits to bold inflatable costumes and novelty one-piece outfits, this collection focuses on simple sizing, comfortable fits and maximum impact. Unisex designs mean no overthinking—just pick your size, add accessories, and you’re ready to go.

Perfect for group themes

Matching jumpsuits, coordinated inflatables, or colour-coded outfits make planning group fancy dress effortless. Whether it’s a stag or hen do, student night, work party or festival weekend, these unisex adult costumes help you build a strong theme without complicated sizing decisions.

Easy to style, easy to wear

Most styles pair perfectly with add-ons like wigs, masks, props and face paint, so you can customise your look to suit the occasion. Check individual product pages for detailed size information and fitting guidance.

Browse the full range below and find a unisex fancy dress costume that keeps things simple, comfortable and party-ready.