>>33223964 (OP)Hawaiian Shirt, perhaps unbuttoned with a solid color tee shirt underneath (graphics tees are low class).
Seersucker anything, entire suit, just a nice button up shirt, whatever.
Takes a decent physique to rock a "bahama" look, thats an option.
White button up long sleeve shirt with sleeves rolled up, assuming again you have the physique.
Polo shirt makes it look like business casual on the way to the office, but its a good last resort.
This is anonymous enough and my T is high enough from being very /fit/ that I feel comfortable saying the above comes from my wife dressing me and shopping for me trying to make her "frenemies" jealous.
There are downsides to this strategy, skin tight shirts may look good if you're very /fit/ but they're uncomfortable, also see ball-squooshing pants and shorts. The bulge comes from it being squooshed and I find it quite uncomfortable but she keeps buying gray sweatpants etc so I guess I'm stuck with it.
You need a totally different strategy if you're not /fit/ and hoping people don't notice.