Mermaid
Mermaid dresses for prom are always a popular choice for prom girls, but you have to have the body to pull it off! By definition, a mermaid dress flares out at the bottom, and is now more commonly called a "flared bottom" dress because not all mermaid styles are poofy with layers of tulle like they used to be. Modern mermaids can also have a simple flare at the bottom without layers for those that want a mermaid look without a poofy bottom.