How can I be cute without changing who I am?

I'm already very small....not extremely, but I'm on the short side. I'm thin, but really curvy and busty. I hate it so much....people say I'm cute (without me asking if I am...just kind of out of the blue). I'm super insecure. How can I be cute, and make my bustiness be less noticeable? Also, my style is kind of preppy if that matters. I wear a lot of dresses, collared shirts, and skirts. (Sorry about my bad English.)