One-Shoulder Long Metallic Prom Dress: Atria 6860HOwn the spotlight in this one shoulder long metallic prom dress 6860H from Atria Couture. Crafted in gleaming metallic fabric from the one shoulder strap to the floor, this long formal dress has a banded neckline with a rhinestone brooch that catches the light. In misses and some plus sizes, this long metallic evening gown smooths over the curves before opening in a side slit and ending in a small train. So stylish for prom, galas, and other formal