Men's fashion question about undershirts
MY DH sometimes wears short sleeve shirts (not polo) to the office. At this time of year (late spring in coastal North Carolina) he'll often wear a white t-shirt underneath. It seems to me that if you need an undershirt, why not just wear long sleeves, and if you think it's warm enough for short sleeves, then skip the undershirt. What am I missing? Any men's fashion gurus out there?