What exercises can help to make thighs not touch?

So I'm not fat (not to be cocky but I'm 5'-8" and 130 pounds) but my thighs still touch. Its not much but it really bothers me. I'm always afraid to specifically do exercises for my legs because I heard that building muscle will make your legs bigger. Are there and diets or exercises that can specifically target your thighs? if so what are they? Thanks!