An Off-shoulder neckline is a style where the neckline sits below the shoulders, exposing the shoulders and collarbones to emphasize feminine curves and elegance. Common elements include wide horizontal necklines, exposed shoulder cuts, elastic constructions or ruffle details, and frequent use in dresses, tops, and resort-inspired garments. The overall style emphasizes sensuality, romance, and airy sophistication, creating a graceful summer-inspired look.