La Femme Open-Back Long Black Formal Prom DressHere's a long black formal prom dress that is as glamorous as it gets. From the designers at La Femme, this long black evening gown smooths over the curves from the v neckline to the hem of the floor length skirt for an upscale look at prom, military balls, and other formal events. The long black designer dress has a hint of sparkle with thin jeweled shoulder straps that criss cross the open back, The long black formal dress has an empire waist that