Rule the prom in this racer back, mermaid silhouette, Rachel Allan 7500 prom dress. Topped with a halter neck and made of satin, this one steals the show. Beadwork covers the entire gown creating intricate patterns and adding loads of sparkle. The halter neckline is taken in at the shoulder and sheer through the decollete, and sweetheart lined underneath. A dramatic trumpet flare makes the skirt stand out full. A triad of straps taper and meet in the middle of the back, finishing the look beautifully.