I'm back in KL now and its seriously the shopping paradise here. Instead of only Forever 21 and H&M as compared to the US, there's a whole bunch of chic, urban clothing in KL. Places like Bangsar, Sri Hartamas are the best place for cute boutiques. And if you want more varieties, Sunway Pyramid and Sungai Wang are good choices too.
And compared to the US prices, clothes here are fairly cheap. And you can be sure that you wont clash with someone else in your university or company.
Because you know.. everyone shops at Forever 21. =.=