What kind of diets and exercises and she do? She is now a cheerleander and is scared about fitting into a unaform. What do you think could help.

A well balanced diet with foods like: fruits, vegetables, whole-grains, and fat-free or low-fat milk and milk products, Meats, Beans, Fish, and Nuts.
See this site for more detailed information on proportions and serving sizes.
http://www.kidshealth.org/kid/nutrition/food/pyramid.html

Kae