Here's a strapless classic prom dress designed with timeless simplicity. Unadorned from the straight neckline to the hem, this simple prom dress is sophisticated. The a-line shape offers a figure-flattering look in this long prom dress. The side slit appears beneath the faux-wrap design of the floor-length skirt. For a versatile style that suits any formal occasion, wear this classic a-line prom dress.