A popular prom two-piece is 6053 by Rachel Allan, which features a plunging neckline, a cutout V-back with a choker detail, floral beadwork at the shoulder, and dramatic, illusion bell sleeves. Ruching gathers into a beaded midriff that matches the waistband's beadwork. A long, jersey skirt with a sweep train accentuates your flawlessly feminine silhouette.