Top Picks
£119.00
£83.30 DOROTHY PERKINS
TAMSIN’S PICK
MILANOOEvening Dress Ball Gown Sweetheart Neck Tea-Length Short Sleeves Zipper Satin Fabric Formal Party Dresses
£136.51
£88.73 MILANOO
£100.00
£28.00 DOROTHY PERKINS
MAGGIE’S PICK
MILANOOBlack Prom Dresses 2026 Color Block Backless Fishtail Evening Gown Mermaid Ruffles Formal Dresses Free Customization
£144.93
£130.44 MILANOO
How we pick
Quick word on how this list was made. Aisha, Imogen, Tamsin, Leanne and Maggie picked their favourites from the formal gown we found across loads of UK shops. No sponsored spots, no brand deals, just what they'd buy with their own money. We keep a mix of prices so there's something whether you're treating yourself or being sensible this month, and we limit how many come from one retailer. Stock and prices update regularly from each shop, so if something's gone, it's sold out rather than hidden.
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Under £509 pieces
INSTOCK
Mermaid Long Evening Dress Party Elegant Long Prom Gown With Belt, 4, 6, 8, 10, 12, 14
£38.99 INSTOCK
GODDIVA
Off The Shoulder Draped Sleeve Maxi Dress - Blue by Goddiva
£39.00 GODDIVA
GODDIVA
Wrap Style Spaghetti Strap Maxi With Split - Red by Goddiva
£39.00 GODDIVA
GODDIVA
Satin Viscose Front Wrap Midaxi Dress - Navy by Goddiva
£29.00 GODDIVA
GODDIVA
Goddiva Cowl Back Satin Maxi Dress
£38.00 GODDIVA−50%
MILANOO
Sequin Maxi Gown With Off-Shoulder And High-slit For Formal Events 2026
£40.50 £20.25 MILANOO−72%
DOROTHY PERKINS
Coast Wrap Waist Satin Cami Bridesmaid Dress In Mocha
£100.00 £28.00 DOROTHY PERKINS−50%
MILANOO
Sparkly Sequin Maxi Formal Dress For Women - Square Neck Slim Fit Back Lace-up Bodycon Mermaid Gown - Summer Gala Prom 2026
£62.30 £31.15 MILANOO−40%
DOROTHY PERKINS
Liquorish One Shoulder Navy Rose Maxi Dress
£77.00 £46.20 DOROTHY PERKINS£50 to £1009 pieces
GODDIVA
Goddiva Wrap Style Spaghetti Strap Maxi With Split
£58.00 GODDIVA
GODDIVA
Goddiva Sequin Cowl Back Maxi
£95.00 GODDIVA
GODDIVA
Sale WatcherGoddiva One Shoulder Sequin Evening Maxi
£78.00 GODDIVA
34formal gown on sale right nowSee them all →
GODDIVA
Off The Shoulder Sequin Wing Maxi - Navy by Goddiva
£83.30 GODDIVA
GODDIVA
Goddiva One Shoulder Evening Maxi Dress
£95.00 GODDIVA−62%
DOROTHY PERKINS
Adrianna Papell Velvet Column Gown In Dark Green
£196.39 £74.63 DOROTHY PERKINS−25%
MILANOO
Chic Fitted White Maxi Gown With Lace Detail Perfect For Formal Events
£99.71 £74.78 MILANOO−30%
DOROTHY PERKINS
Coast Strapless Maxi Dress With Pleated Chiffon Cape In Navy
£119.00 £83.30 DOROTHY PERKINS−35%
MILANOO
Evening Dress Ball Gown Sweetheart Neck Tea-Length Short Sleeves Zipper Satin Fabric Formal Party Dresses
£136.51 £88.73 MILANOOWorth the splurge7 pieces
GODDIVA
Goddiva Cross Back Diamante Strap Sequin Maxi
£150.00 GODDIVA
MILANOO
Evening Dress Ball Gown Strapless Short Sleeveless Zipper Feathers Polyester Formal Dinner Dresses
£111.40 MILANOO
DOROTHY PERKINS
Adrianna Papell Metallic Jacquard Rose Gown
£269.00 DOROTHY PERKINS
GODDIVA
Cross Back Diamante Strap Sequin Maxi - Black by Goddiva
£150.00 GODDIVA
GODDIVA
Cross Back Diamante Strap Sequin Maxi - Gold by Goddiva
£150.00 GODDIVA
DOROTHY PERKINS
Adrianna Papell Poly Chiffon Long Dress In Yellow
£299.00 DOROTHY PERKINS−10%
MILANOO
