Here's a beautiful long a-line prom dress that combines traditional design with modern details. From the designers at La Femme, this gorgeous long formal dress has a sheer-lace bodice with a deep v-neckline. With a quick twirl, this romantic long formal dress showcases the matching sheer-lace v-back that offers a flirty look for prom, fancy galas, and other formal events. The long designer evening gown has a fully-lined long skirt with a sheer overlay that gathers at the waist before flowing over the hips, opening in a side slit, and ending at the floor in an a-line shape. Overflowing with upscale style, this long La Femme a-line prom dress creates the impressive silhouette that every glam girl deserves.