Long Butterfly Mermaid Prom Dress: Chicas C816If you like butterflies, you'll love this long mermaid prom dress C816 by Chicas. In misses and some plus sizes, this gorgeous long formal dress features embroidered butterflies from the deep v neckline to the hem. With a sheer corset style bodice that wraps around to the back, this long special occasion dress gets a sexy vibe, while the long mermaid skirt cascades down into a small train. No one will soon forget this long mermaid butterfly prom dress