Rushed-Sash Long Mermaid Prom Dress: Atria 6200HShow off the curves in this long mermaid prom dress 6200H from Atria Couture. Smoothing over the curves from the surplice v neckline to the horsehair hemline, this long formal dress features a diagonal ruched sash that flows from the waist to the hip. In misses and some plus sizes, this long mermaid evening gown has thin shoulder straps that lead to the low v back, while the long skirt has a back godet that flows into a small train. So luxurious for