Funny, as I recall, these 'man-blouses' were very popular in the 70's. I remember seeing lots of guys wearing them, in person and on TV. In fact, I'm pretty sure my ex husband had at least one. They weren't very popular where I grew up, though Don certainly sports that look now. (Flannel or flannel-looking, depending on whether it's winter or not. 40 years later and it's still the popular style there).