THERE WAS THIS MOVIE I WAFCHED A LONG TIME AGO IT FEATURED A SLENDER TEEN WITH A PIXIE CUT BROWN HAIR WHO HAD A LITTLE BIT OF FRECKLES AROUND HER NOSE AND HAD BRACES. SHE DRRSSSED LIKE A TOMBOY AMD HAD A SWEATER JEANS AND CONVERSE USUALLY ON. I KNOW IN THE MOVIE SHE MEETS A BOY AND THE SCENE I REMEMBER IS THEM AT A PARTY AND HE TRIES TO GET INTIMATE AND SHE PUSHES HIM AWAY AND LEAVES.
Maybe: Inside Daisy Clover (1965) – http://www.imdb.com/title/tt0059314/
Kids???