Top Picks
£32.00 PRETTYLITTLETHING
£27.00 PRETTYLITTLETHING
GEMMA’S PICK
MILANOOGingham Cottagecore Mini Dress For Women - Yellow Plaid Halter Backless Skater - Summer Birthday Party 2026
£28.04
£14.02 MILANOO
£15.00 PRETTYLITTLETHING
£27.81
£19.47 MILANOO
How we pick
Every collection on What She Wears starts with a pile of products and ends with a short list chosen by real women. For birthday backless dress, that was Tamsin, Chloe, Gemma, Maggie and Zara. They looked at shape, fabric, reviews where there were any and, honestly, whether it made them want to wear it this weekend. Things that look great on a model and terrible on a hanger tend to get cut. The full list underneath is everything that matched, from lots of different shops, so you can still have a proper browse.
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PRETTYLITTLETHING
Petite White Polka Dot Chiffon Scarf Detail Ruffle Shift Mini Dress
£14.00 PRETTYLITTLETHING
MISSPAP
MISSPAP Women's Pleated Detail Volume Hem Mini Dress in Sage
£59.00 MISSPAP
PRETTYLITTLETHING
Fuchsia Chiffon Deep Plunge Flower Detail Maxi Dress
£13.00 PRETTYLITTLETHINGPRETTYLITTLETHING
Deep Plum Mesh Ruched High Neck Lace Trim Cut Out Maxi Dress
£32.00 PRETTYLITTLETHING
PRETTYLITTLETHING
Navy Double Layer Slinky Ruched Maxi Dress
£27.20 PRETTYLITTLETHING
PRETTYLITTLETHING
Chocolate Lace Panelled Strappy Fishtail Maxi Dress
£18.00 PRETTYLITTLETHING
MILANOO
Ruched Mini Dress Cutout Ruffles Sleeves Backless Birthday Party Dresses
£54.53 MILANOOPRETTYLITTLETHING
Blue Grey Satin Contrast Lace Panel Maxi Dress
£27.00 PRETTYLITTLETHING
PRETTYLITTLETHING
Shape Black High Neck A Line Mini Dress
£22.40 PRETTYLITTLETHING
PRETTYLITTLETHING
Petite Chocolate Lace Halterneck Bubble Mini Dress
£15.50 PRETTYLITTLETHING
PRETTYLITTLETHING
Sale WatcherPetite Yellow Polka Dot Halterneck Shift Mini Dress
£20.00 PRETTYLITTLETHING
7birthday backless dress on sale right nowSee them all →PRETTYLITTLETHING
Lemon Woven Boat Neck Backless Detail Mini Dress
£15.00 PRETTYLITTLETHING−50%
MILANOO
Gingham Cottagecore Mini Dress For Women - Yellow Plaid Halter Backless Skater - Summer Birthday Party 2026
£28.04 £14.02 MILANOO−30%
MILANOO
Birthday Party Dress V-Neck Sexy Fringe Sleeveless Backless Short Dresses
£27.81 £19.47 MILANOO−45%
MILANOO
Navy Blue Halter Women's Maxi Dress - Asymmetric Lace Patchwork Backless Gown - Sexy Bodycon Summer Birthday Party Wear 2026
£36.82 £20.25 MILANOO−45%
MILANOO
Floral Dress Spaghetti Strap Backless Lace Up Birthday Party Midi Dresses
£39.65 £21.81 MILANOO−45%
MILANOO
Halter Neck Jacquard Mini Dress For Women - Backless A-line Skater Dress With Big Bows - Summer Birthday Party 2026
£39.65 £21.81 MILANOO−68%
MISSPAP
MISSPAP Women's Premium Textured Shimmer Midi Dress in Black
£68.75 £22.00 MISSPAP−35%
MILANOO
Sleeveless Mini Dress Backless Cupcake Hem Birthday Party Dresses
£39.54 £25.70 MILANOO−40%
MILANOO
A-line Dress with Floral Embellishments No-sleeve Backless Birthday Party Mini Bud Dress For Women 2026
£42.83 £25.70 MILANOO−40%
MILANOO
Pearl Cocktail Dress With Bow Sleeveless A-line Backless Birthday Party Mini Dress For Women 2026
£46.73 £28.04 MILANOO−41%
MISSPAP
MISSPAP Women's Premium Mixed Sequin Backless Mini Dress in Silver
£69.49 £41.00 MISSPAPMore like this
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