Any diets that work well for a 14-15 year old. I am like 20 lbs over what i am supposed to be. I never really thought about it untll today when i put on a short skirt. It was really upsetting because everybody was saying that i was fat, and making fun of me. I don't know what to do. I have been on that internet for hours looking for a diet that is FREE, and works FAST. So please help.