Here's a bargain-priced one-shoulder long white prom dress that is truly beautiful. In body-contouring jersey fabric from the fold-over asymmetrical neckline to the floor, this long white evening gown is a figure-flattering choice from the Amoris collection by Cinderella Divine. In misses and some plus sizes, this long white formal dress has side ruching for a fitted look, while the long skirt flows into a small train that completes the design. Also beautiful for savvy brides, this one-shoulder long white prom dress is priced under $100 for prom, galas, and other formal events.