Leg Avenue - British Flag Print Costume Dress, Size M/L

Leg Avenue - British Flag Print Costume Dress, Size M/L

Make a striking, confident statement with the Leg Avenue British Flag Costume Dress — a bold, fashion-forward piece designed for those who love to stand out. Inspired by iconic British pop culture and the timeless Union Jack motif, this eye-catching dress brings retro cool and contemporary flair together in one versatile garment. Whether you're heading to a themed party, a music festival, a fancy-dress event, or simply a fun night out, this costume dress is guaranteed to turn heads.

Fabric & Fit
Crafted from a carefully selected blend of 91% polyester and 9% spandex, this dress is engineered to move with your body. The spandex content delivers excellent stretch and recovery, meaning the dress hugs your silhouette flatteringly without feeling restrictive. The lightweight polyester ensures breathability throughout the day or evening, while the fabric's smooth finish gives the vivid Union Jack print a sharp, vibrant appearance that holds its colour wash after wash. The stretchy construction makes it suitable for a range of body shapes within the M/L sizing bracket, adapting comfortably to your natural curves.

Design Details
The all-over British flag graphic is bold and instantly recognisable, offering a high-impact visual effect that requires minimal accessorising. The modern cut keeps the silhouette sleek and contemporary, updating the classic patriotic print with a fashion-conscious sensibility. The result is a garment that feels just as at home at a retro-themed event as it does at a modern pop-culture festival.

Styling Suggestions
Pair this dress with ankle boots or platform heels for an effortlessly complete look. Add fishnet hosiery and bold accessories to lean into the retro-Britpop aesthetic, or keep it minimal for a cleaner, modern finish. The dress works equally well as a standalone statement piece or as the centrepiece of a more elaborate themed costume ensemble.

• Material: 91% polyester / 9% spandex blend for comfort and stretch
• Print: All-over Union Jack / British flag graphic in vivid colour
• Fit: Body-con silhouette that accommodates a range of figures within the M/L size range
• Versatility: Suitable for themed parties, festivals, fancy dress, or bold everyday styling
• Ease of Care: Polyester-spandex fabrics are typically easy to launder; gentle machine wash or hand wash recommended to preserve print vibrancy and fabric elasticity
• Sizing: Medium/Large — please refer to the size guide to confirm your measurements before ordering

About Leg Avenue
Leg Avenue is a Los Angeles-based brand with a long-standing reputation for producing high-quality costumes, lingerie, hosiery, and fashion accessories. The brand is committed to inclusive, body-positive design, believing that every woman deserves to feel confident, glamorous, and entirely herself — regardless of shape or size. Leg Avenue consistently combines premium soft fabrics, thoughtful construction, and trend-led design to create pieces that feel as good as they look. From luxurious lace to smooth stretch fabrics, every style is created with comfort, quality, and self-expression at its core.