Surprisingly affordable, this long navy blue prom dress by Alyce is under $200 and overflowing with style. Smooth jersey fabric gently hugs the curves, sending attention to the silhouette, while a sharp v-neckline visually slenderizes and elongates the body. Sleeveless, this formal blue long v-neck prom dress is alluring, yet comfortable for dancing. To make the design even more sultry, bold straps transition from the top of the v-neckline to the sides of the back to border the caged-back design and frame the low-back v cut out. Eye-catching bands cross over the open back, forming exquisite cut outs that make this long navy blue prom dress truly unique.