Here's a beautiful one-shoulder long formal dress 26163 by Mac Duggal that is sure to elevate your evening look. Sleek and elegant from the asymmetrical neckline to the hem, this one-shoulder long evening gown is a classy choice for prom, galas, and other formal events. The one-shoulder long dance dress has a faux-wrap midriff that tops the long a-line skirt that opens in a side slit before ending at the floor. A small train completes the look of this one-shoulder long formal dress that is the perfect balance of elegance and feminine charm.