Shirt etiquette?

We live here and agree that the lack of shirts is not cool. He is shirtless on the beach and inside our compound. If he has to get something from someone at the door, he puts his shirt on.

My pet peeve, and it hasn't been bad this year. Males and especially females who go to the grocery store in a bathing suit without a cover over it. I finally started confronting them and asking them if they would go to their neighborhood store dressed like this. As they gasp, I say that this is MY neighborhood grocery store and I am insulted by their behavior.

Probably shouldn't do it, but....