Why won't my parents accept my style? Help!?

I'm 13 and I'm a girl and I wear skinny jeans, band tees, a few graphic tees, converse, vans, and I have my bangs covering one eye. I listen to metal, emo, hardcore, etc. They always tell me to stop wearing the clothes I wear and to listen to some "real music". It's been bugging me and I tell them that this is how I want to dress and that I want to listen to music that I like but they wont stop trying to change me! How can I get my parents to accept me for who I am?