“Design by Humans”, great design and good prices. I just ordered two t-shirts. Check it out.

http://www.designbyhumans.com/

EDIT:
I received the t-shirts after a week. They fit and look great. Only downside is that due to shipping option Design by Humans offer, the chance that your package get stuck in customs is much greater. That makes it a very expensive and not any good deal anymore.

Want a cheaper t-shirts? Check: http://www.threadless.com/. They do not have same print quality but the price is ends 50% below (with better and more safe shipping option).