Mermaid off shoulder collar sleeveless backless side slit and floor length Prom dressSimply breathtaking, this off the shoulder long prom dress LD is sure to get endless compliments. With a structured deep v neck corset that wraps around to the back, this off the shoulder long evening gown gets a fitted look for prom, galas, and other black tie events. In misses and some plus sizes, this long formal dress has fold over banded sleeves that flow to the back, while the long skirt opens in a side slit before pooling into a train.