Ruched Empire-Waist Long Mermaid Prom Dress: 6536HFrom Atria Couture, this open back long mermaid prom dress 6536H is a testament to the modern woman. A curve hugging choice for prom, galas, and other black tie events, this backless long formal dress features a v neck bodice with an empire waist that provides a long, lean look. In misses and some plus sizes, this exciting evening gown has thin shoulder straps that criss cross the open back, while the hip hugging long mermaid skirt has a diagonal