Here's a two-piece long mermaid prom dress that is sure to steal the show on your very special night. From the designers at La Femme, this gorgeous two-piece formal dress includes a beaded sweetheart crop top and contrasting long mermaid skirt for a look that is as impressive as it is beautiful. The gorgeous long designer dress shimmers with beading at the sweetheart neckline, and a sparkly horizontal strap that wraps around the open back. The two-piece mermaid gown includes a hip-skimming long skirt that juts out at the knees before ending at the floor. Showcase a bold look at prom, a military ball, or another formal event in this show-stopping two-piece long mermaid prom dress from the designers at La Femme.