Off-Shoulder Long Formal Dress: Marsoni M342Showcase the silhouette in this off the shoulder long mermaid formal dress M342 from Marsoni by Colors Dress. With a peek a boo beaded sweetheart neckline, this long designer dress gets just the right amount of sparkle for prom, galas, and other formal events. In misses and some plus sizes, this long special occasion dress has a fold over off the shoulder neckline that doubles as cap sleeves, while the long mermaid skirt has tummy camouflaging ruching