Open-Back Long Sequin-Velvet Prom Dress 9158This long sequin prom dress is as curve contouring as it is sparkly. With shimmering sequins on plush velvet fabric from the straight neckline to the floor, this fabulous strappy back evening gown creates a silhouette that is simply stunning. In misses and some plus sizes, this long sequin formal dress has double thin shoulder straps that criss cross the open back, while the long skirt opens in a side slit before draping to the floor for a dramatic