Am I disgustingly thin? How can I go from this.. to this?

You are definitely not disgustingly thin, you have a perfect body. I already envy your body, nice tan, beautiful curves. Your lucky and yes you are on the thin side. But its a good thing! Your not gross looking, your super pretty. You should just smile, keep your head up, and accept the fact that you have a gorgeous body that most girls have to really work for.