exercise, it works much more than diets, though eating healthy doesnt hurt, i've just never liked the idea of being told what i can and cant eat.
Oh, that's easy.. more sex and less eating. YEAH, BABY ! lol No, really, I would drink Slim Fast. I would have an apple/ banana and eat salads. Don't drink to much drinks that have sugar in it. Stay away from sweets. Good luck to you, hun.
You are still growing up. The taller you are as an adult the more space there is to hold a little extra weight. You need good nutrition expecially now to grow. Moral do not starve your body when you are still growing like when you are in your teens. Worry about being skinny when you are no longer the goddess you will be at 23.