Long Mermaid Prom Dress: Andrea & Leo A1354Two dresses in one, this off the shoulder long mermaid prom dress A1354 is simply stunning whatever mood you're in. From Andrea and Leo, this gorgeous off the shoulder long formal dress includes dramatic oversized shoulder straps that are completely detachable for a sleeker strapless look at prom, galas, and other black tie events. With a sheer corset that wraps around to the back, this beaded long evening gown has a matching beaded collar and a hip