This long a-line prom gown is as beautiful as it is figure flattering. With a surplice v-neckline, this gorgeous evening gown has double shoulder straps that criss cross the open back before attaching to the trendy corset detail that adjusts for a perfect fit. With a wrap-style waist, this elegant formal dress includes a long skirt that opens in a side slit before flowing to the floor in a stylish a-line shape. Convenient side pockets complete the look of this long a-line prom gown that is so fine for prom, fancy wedding receptions, and other formal events. Offered in misses and plus sizes, this dreamy long a-line prom dress is surprisingly affordable, at under $200.