Ruffle One Shoulder Formal Long Evening Gown jan 2, 269 PENSAMIENTO PEDAGGICO ROMANO (Timeline). Here's a beautiful one shoulder long evening gown with a look of drama. Elegant ruffles on the one shoulder bodice gives this fancy formal dress an impressive look whether you are going to prom, a fancy wedding reception, or another black tie formal event. With an asymmetrical neckline, this floor length gown includes a dramatic mermaid skirt that hugs the curves before opening in a side slit and pooling into a sensational train that follows every move. Make a fashion statement in this one shoulder long evening gown with ruffles, and know you are sure to receive endless compliments on your big night.