Unforgettable velvet heart-shaped neckline, wide shoulder straps, mermaid silhouette, and floor skirt Prom DressesOKBBN's unforgettable velvet heart shaped neckline, wide shoulder strap mermaid silhouette, and floor skirt Prom Dresses. This dress is made of velvet fabric, with a suspender design and a backless and fishtail silhouette that exudes elegance and luxury. The velvet material has a premium texture and comes with its own luster. The camisole cut showcases charming shoulder and neck lines, while the backless lace up design adds exquisite details. The fish