Its my friends birthday this month 20th!! :S (PLEASE ANSWER!)?

Me and this friend and a bunch of others have be close friends for some time now and recently we began buying each other things for our birthdays! She will turn 14 on the 20th and i really want to buy her something nice. She's into jewellery but my other friend is getting her a necklace already! I don't want to buy her something expensive, just something nice, not too cheap though.... I'm going to get her a card of course but that isn't enough obviously! What should i get her! Nothing inappropriate for her age, something that she likes.... She's a glamorous girl, and i DO NOT want to get her jewellery! Any good suggestions!