Please help even tho it sounds stupid?

ugh ok my friend is this big time supposedly punk or whatever they want to call themselves and i am sorta preppy and i care bout my looks..i listen to all sorts of music and she listens to only rock ect..i listen to a few bands but i guess it drives her crazy that i have interest in that kind of music,,what gets me mad is she thinks shes the only one that can like the music and if somebody who doesnt support it by wearing clothes that say band names on it is a pozer and she gets all crazy and says but you dont like that music...what do i say to her? i know this sounds stupid but that the conflict in out friendship please help! =)