How can I seem less selfish over people borrowing my things?

Before you jump and answer this by judging me, listen to what I have to say. You see, my parents are both hard workers and they buy me usually just about anything I want. I love to shop and I have a ton of name brand clothes and stuff. Problem is, my friends that come over want to wear these things and never give them back. This has happened plenty of times, whether it is a t-shirt or a pair of miss me jeans, I have to beg for something back. Anyway, lately I have been more alert to people borrowing my things and I tell almost all my friends this: Nobody is wearing any of my clothes anymore.. and then I explain why and they get mad at me and say I'm being rude. Just last night, one of my friends wanted to wear my favorite Juicy sweats and I said no and she got MAD! Is this wrong of me.. I've lost socks, panties, shirts, shoes, and jeans! I even have a hole in my Ugg boots because of a friend.... what do I do??