I grew up without name brands. It isn't really about that. If you get clothes that fit and look good on you no one will notice that you don't have name brands. I had a friend who was voted best dressed in high school and most of her clothes came from Kmart. If you really want to add a feew name brand pieces look in consignment shops or thrift stores.
How do I protect myself from people who wear expensive brands? I, as student, can not afford expensive clothing. So, I feel worthless.
Vanity is not a virtue, my friend. A measure of one's character is making do with what he or she has. As a student, perhaps you should be more concerned with bettering yourself for future successes, not fussing over meaningless trifles like clothing labels. Years from now, those labels will mean nothing, but the education you should be focused on now will be carrying you forward.
So what, those other people spend too much on clothing, does that make them better than you? If you think it does, some counseling might be a wise move for you.
You can buy cheap clothes at Walmart, and mall quality clothes at discount stores. I wear $10 shoes that look like converses... FROM THE FAMILY DOLLAR!