Get them tailor-made honey! Just pick out the design and fabric and they'll sway their magic wand and viola! Your own, unique, perfectly fitting outfit is ready. This article has some good tips on where to go in Shanghai:

You could check out American Apparel in Shanghai. I recently went shopping in Shanghai with a couple of colleagues (mainly female) and they seemed to find stuff there.

Another one we went to was The Cottage Shop, which had a decent range of imported t-shirts and jeans for men and women on 179 Wulumuqi Zhonglu - but definitely not cheap.

Then there's American Eagle Outfitters on Nanjing Xilu , which I imagine caters to foreigners, and while you're there don't forget to check out the h&m there.

There are too many to name here . American eagle all of the clothes are imported so the size would be a normal western size fit. Walmart should have some normal sized clothes as well. It's the japanese stores you have to watch out for.