Here's a fabulous long black prom dress named Naomi that offers a classic look with sexy details. Crafted in stretch scuba crepe from the straight neckline to the floor, this long designer dress by Velvi has a sheer corset-style waist that wraps around to the back. In misses and some plus sizes, this long black formal dress has thin shoulder straps that adjust before attaching at the back, and a hip-hugging long skirt that opens at the side before pooling into a small train that completes the look. A hot pick for the season, this long black prom dress combines elegant simplicity and bold details for a look that is sure to own the spotlight.