Rosette Open Back Halter Corset Ruched Mermaid Maxi Dress With Cutout Strapless Off the Shoulder Ruched Mermaid Maxi Dress With Slit KOREYILA Open Back Halter V Neck Lace Corset Mermaid Maxi Dress With Beading Sl V neck Cross Tie Backless Ruched Mermaid Maxi Dress Lebdu V neck Blue Open Back Ruched Mermaid Long Dress PollyBoutique. A stunning mermaid prom dress featuring a halter neckline adorned with an elegant floral accent, a keyhole detail for a touch of allure, a structured corset style bodice for a sculpted fit, smooth satin fabric that drapes beautifully, and a dramatic sweeping train for a show stopping finish. Perfect for making a bold statement at any formal event!