gorgeous blue dress Long Royal Prom with Lace-Up Open Back Royal Blue / 10 See plus Blue Once Upon a Dream

Channel your inner glam with a sequin-covered dress thatll light up the night wherever you go

Women dont have to wear a long dress (etiquette specialists Debrett's say knee-length cocktail frocks are fine) but you should definitely go more fancy than what youd wear on a regular night out

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Pair it with a black sexy skirt, and your party costume is ready

It features Medusa hardware on the shoulder straps, a scoop neck, a sleeveless silhouette, and ribbed trims