Here's a designer prom ball gown by Colette for Mon Cheri that is captivating. The v-neck bodice of this Colette prom dress sparkles with swirls of beads and rhinestones, and the tulle skirt shimmers with a sequin and glitter print. An illusion inset supports the plunging v-neckline, and v-shaped sheer sides add to the dramatic look of this sequin and glitter prom dress. The open back completes the bold styling of this tulle designer prom gown.