My dd is 14 and goes to a performing arts high school. She gets striaght A's and follows the rules. She hasn't asked me to date and loves to go out with friends. I have let her get her ears pierced and she now has three holes. SHe asked me to get the underside of her hair (which is long and curly) dyed red. So, I let her. My MIL flipped out. She said between the ear peircings and now getting her hair dyed she is going to look like a "hood". Another mom said she would never let he dd dye her hair until she was 18.
My opinion is she is a good kid and wants to have some fun with her appearance. This is the time to do it.