OKdress sells wonderful evening gowns and dresses for all shapes and sizes, and they have a variety of affordable prom dresses for all your budgets, no matter how big or small. I've been into the trend of Mermaid Dresses lately. These are figure-hugging dresses with a rounded butt area, and they hug your hips really tightly giving you a nice shape.
Here are some mermaid dresses that I particularly love:
I particularly like their long mermaid prom dresses because of it's shapely silhouette and tight fitting outline. I'm thinking of getting one myself!