I typically wear the Macy's bar iii slim fitting dress shirts (some 14-14.5 and some 15-15.5 depending on material), Tommy Hilfiger Athletic Fit Dress Shirt (all 14.5) and Alfani Athletic Fit AlfaTech (all 14-14.5). To wear this shirt properly, you must have a V-shaped body. If you don't go to the gym and eat a healthy diet, you should wear a regular-fitting shirt, and if you're skinny, try a slim-fitting or very slim-fitting shirt. I hope this helps everyone so you are not disappointed!