Backless Long Sequin Prom Dress: Aerie Couture 217The spotlight will love this long sequin prom dress 217 that shimmers with every move. Fully sequined from the square neckline to the hem, this long formal dress has thin shoulder straps that criss cross the open back before lacing up for the best fit at prom, galas, and other black tie events. In misses and some plus sizes, this long sequin evening gown has a hip skimming long skirt that opens in a side slit before draping to the floor. Step into the