http://art-smart.ci.manchester.ct.us/how_to/how_to_hi_shirt.html

fold an origami Hawaiian Shirt ( a short sleeved sport shirt).

The origami shirt is one of my favourite models: it is easy to make, and looks great! In the site above you will find step-by-step instructions to fold it, with pictures. The hawaian look is optional, of course: I for instance made this soccer-themed shirt