Nicole - I just wanted to say thank you for your comment that I should take another look at the t-shirt I thought was too tight. You really made me think about how I sometimes get unrealistic about how things look on me.

I went back to AT and tried on the t-shirt again, and the medium was fine. I really needed some basic long sleeve t-shirts (very useful in LA), and I bought that one in a few basic colors plus a gorgeous plum. I think if you hadn't said what you'd said, I would not have gone back!