Colette Backless Long Sequin Prom Dress CL5196From Colette by Daphne, this long sequin prom dress is ready to dazzle the crowd from sunup to sundown. With embroidered floral designs from the v neckline to the floor, this backless long designer dress is twice as nice for prom, galas, and other formal events. The tight long sequin formal dress includes sparkly thin shoulder straps that lead to the deep v back, while the hip skimming long sequin skirt opens in a side slit before ending at the hem.