So elegant, this one-shoulder long black formal dress sparkles in the light. With allover sequins from the asymmetrical neckline to the hem of the floor-length skirt, this black evening gown is ready for the spotlight at prom, pageants, or white-tie formal events. Effortlessly glamorous, this long black sequin dress has a unique single long sleeve detail that leaves the other arm bare. The dazzling evening gown has a small triangular cut out near the shoulder in front, as well as a much larger triangle-shaped cut out that creates an open-back design. The long fitted skirt opens in a side slit before draping to the floor. A real statement-making choice for your event, this one-shoulder long black sequin formal dress is overflowing with shimmering style.