Hows to get a bigger legs,butt, ect !?

I am a very skinny person, I am 15 and Im almost 5'4 and 98 pounds ! I am going to be a sophomore. I'm known as the pretty face with no body. I really want to have a more womanly figure , WITHOUT getting fat, or gaining weight in the places I don't want it ! i tried everything, squats, running, pretty much everything. Does anyone have any suggestions or exercises to get a bigger butt and legs?!