Mermaid style dresses are so beautiful and magical! These dresses are tight at the top and fit snugly around the body, but at the bottom, they flare out like a mermaid's tail. The Mermaid style dresses are so beautiful and magical! These dresses are tight at the top and fit snugly around the body, but at the bottom, they flare out like a mermaid's tail. The Romantic Ruffled Tulle Mermaid Dress Kleinfeld Bridal Strapless Sequin Mermaid Dress With Colorful Floral Design 11036 Sequined Lace Mauve Big Feathers Custom Mermaid Custom Prom Dress Formal Dress: 61674. Long, Plunging Neckline, Mermaid Alyce Paris