How do you guys usually size the 19th C button-downs? I'm still unsure about going small vs medium.
I'm 5'11 with a 38" chest, and was told earlier that I'm a medium in most EG shirting. I'm looking at the blackwatch plaid from this season, and online P2P measurements for a medium range from 21"-22" and the shoulders a whopping 18.75". Are they cut in such a way that I shouldn't be comparing measurements to shirts I already own?