Low-Back Long Metallic Prom Dress: Atria 6917HMade in the USA, this beautiful long metallic prom dress 6917H by Atria is more than a dress, it's a story waiting to be told. Crafted in soft, stretchy metallic fabric from the square neckline to the hem, this long designer dress has sturdy shoulder straps that lead to the strappy deep v back. With an empire waist, this long formal dress gets a long, lean look, while the floor length skirt opens in a side slit before ending in a fabulous train. A