Step into the 2018 season in one of these sexy mermaid style formal dresses, if you are looking for a long evening gown or prom dress to show off your curves. This is a sleek and feminine style dress that is tastefully form-fitting. Mermaid evening gowns follow your silhouette to the mid thigh or calf and then flare out at the bottom. The upscale look of a mermaid dress is sure to get you noticed. Okbridal has many elegant mermaid dresses available in strapless evening gowns, halter top formal dresses, and designer long evening dresses for prom or pageant.