Colette Long Sequin Prom Dress with Sheer SidesA sparkly design makes this long sequin prom dress a sensational style for your big night. From Colette for Mon Cheri, this long designer dress, style number CL2013, features clusters of sequins on glittery embroidery from the deep v neckline to the floor. Sheer sides create a sexy look on this tight evening gown, while thin shoulder straps criss cross the open back to add to the vibe. The backless formal dress smooths over the hips before opening in