Worthy of a crown, this long a-line prom dress is an impressive style with lots of pizazz. With a pleated cowl neckline, this gorgeous long a-line formal dress has a corset-style sheer waist that wraps around to the lace-up back. The elegant evening gown has a long skirt that includes a thigh-high side slit as the gleaming fabric flows to the floor in a flattering a-line shape. A fashion-forward look for prom, galas, and other formal events, this long a-line prom dress is as flirty as it is glamorous.