If purple is your color, this long lavender mermaid prom dress 32091 by La Femme is sure to impress. With purple embroidered-lace appliques from the v-neckline to the hem, this long lavender evening gown is a head-to-toe stunner for prom, galas, and other formal events. The long purple evening gown has floral shoulder straps that lead to the deep v-back, while sheer sides hint at sexy style. The long mermaid skirt hugs the hips before pooling into a small train that finishes the design of this long purple prom dress that is offered in misses and some plus sizes.