Blaaah...Please help?!?

I really need new clothes for school but since I live in a town where there is no other place to shop for clothes other than walmart,I have to shop online.My question is,what are some good clothing sites for a 16 year old girl?The ones I know of are wetseal,forever 21,glamour kills,and all the dapartment stores.So please tell me of any good ones that you know of with fairly reasonable prices.I don't have $50 to spend on just one blouse.haa,but you get it.So please help me out!& I live in America,so I prefer American sites just because I don't want to convert prices and pay extra shipping costs.Thank you(: