How do I lose thigh fat I am 11 years old and I weigh 64 pounds I want my legs to get skinnier not bulky

Your 64 pounds hun?

Sports and eat healthy (not starve yourself) eat a balanced diet.

At 11 you really don't have much to worry about. But if you want to lose fat in a certain place, it isn't going to happen. I would suggest eating healthy and staying active. And sleep.