Long Halter Mermaid Prom Dress: Atria 7036HFor a slinky silhouette, slip into this long halter mermaid prom dress 7036H. From Atria Couture, this sexy long formal dress features a deep v neckline and thin shoulder straps that attach at the back of the neck for a sultry look. In misses and some plus sizes, this elegant long evening gown has a front floral detail that creates a look of whimsy, while the strappy open back adds to the sexy vibe for prom, galas, and other formal events. The hip