In gleaming metallic jersey, this long plus-size prom dress is sure to catch the spotlight. From the La Femme Curve plus-size collection, this gorgeous long formal dress includes one long sleeve and a unique asymmetrical neckline. The ruched plus evening gown smooths over the hips before opening in a side slit and resting at a dramatic floor length. Sparkle at prom or another formal event in this La Femme long prom dress, in plus sizes.