I'll probably end up with a scrubs-style shirt; that's a great idea.
I ran across a photo that looks like what I had in my head at
http://willowluna.wordpress.com/2008/03/14/handmade-day-4.
But, the photo shows the unfinished shirt, and I'm not sure exactly how to go about turning those inside curves. Maybe if I just sit down and play with some fabric it will make sense.
Thanks for the advice, everyone.