‘Who says you are not perfect?’
When you are upset, maybe try some music like this one.
Nobody can say you are not beautiful. The one who says that is the ugliest one ever. So don’t care about how you look. As long as you love and respect yourself, you will be the perfect and special girl.
Perfect does not mean you have no any weakness or disadvantages, perfect means you have disadvantages but you accept them as being part of you and are not afraid of letting others know.
Fat? Ugly? Do they really matter in your life?
People who love you will accept all of you and people who hate will always hate you even if you are perfect as a princess.
So why not just be yourself.
Be what you like to be, do what you like to do.
You are a girl, the most lovely living beings in the world.