[PJ]

Usually I tend to shy away from cheap clothing just because I think you get what you pay for (quality, style, fit, life expectancy, etc).
BUT
Having said that, anytime I need clothes for a short period of time, or for times where there's a high chance of my clothes getting damaged/dirty, I always just go to Old Navy. Don't expect to find anything fancy, but they do have pretty decent basic stuff. Their stuff may not be the best quality, but the one thing I can give them is that the fit is pretty damn good for what you're paying. Clothing from other cheap places like H&M, Urban Planet, Stitches, etc, always seem to shrink all funky after a wash. But Old Navy's stuff seems to hold pretty well. Also, they almost always have some sort of sale going on.