Tee-Shirts
As a nudist, I generally avoid staying in the sun for extended periods. I have always felt that a tee-shirt was the best sunscreen, but that wearing only a shirt would be frowned on as not nude, but exhibitionist. I'm glad this group exists.
Well we get you in here, seems like half nude is bad for the nudism and for the textile.
The first nudist my ex encountered at her first-time nudist resort outing was the resort manager in the main office; and he was Donald Ducking. She thought his penis "peeking" from under his shirt seemed a little exhibitionistic to her.
Ironically, a few hours later, she decided to undress, but the air was a little too chilly for her to go completely nude. So she pulled out a T-shirt to put on. She realized at that point that there was nothing exhibitionistic about Daisy Ducking; that it was simply a matter of being comfortable, while still being at least partially nude.
There's nothing wrong with Donald Ducking for the sake of protection; be it from the sun or the cold air. Many times I've gone to nudist venues early in the morning, when it was still cool; and started out bottomless. It's still nudism.