Long Open-Back Formal Prom Dress by FavianaBe fabulous in this open back long formal prom dress from the designers at Faviana. So glamorous, this a line formal dress is crafted in gleaming charmeuse for a look of romance whether you are attending prom, a military ball, or another black tie event. The gorgeous long designer a line evening gown has a form fitting bodice with slight curved neckline and thin shoulder straps that criss cross the open back before lacing up for a comfy fit. A wide