Simple but beautiful, this long a-line prom dress 26578 is sure to be a new favorite for formal events. With a plunging v-neckline and shoulder straps that lead to the matching deep v-back, this floor-length evening gown offers a sophisticated look for prom, galas, and other black-tie events. The deep v-back long formal dress has a banded empire waist that offers a long and lean look, while the long a-line skirt opens in a side slit to offer a sexy vibe. Offered in misses and some plus sizes, this long a-line prom dress by Mac Duggal embraces contemporary elegance while hinting at seductiveness.