I can't even imagine how much of a smug bitch you have to be to care about this.
I could understand if people smelled, or were wearing like pjs, or a tank top, or some graphic tee.
But if a guy has a tucked in polo as a wedding guest and you notice that in a negative way you really got your priorities out of whack. Especially in warmer climates/months. Nobody should have to wear sleeves on a 90 degree day
http://i.imgur.com/FS3aeNW.png
http://i.imgur.com/Hy9IDHK.gif