Backless Chiffon One-shoulder Empire Prom Dress. Empire prom dress with a one-shoulder neckline. The chiffon fabric is delicately gathered in all the right places to be figure-flattering. The unique geometric back flows down to a floor-length skirt that creates a stunning figure. Buy this Dress and you can Save 80% OFF For Backless Chiffon One-shoulder Empire Prom Dress.