I don't enter a lot of art shows, but I get plenty of announcements. Many, probably most of the shows, are open to works in various mediums, of various sizes, and of any subject matter, except nudes. Which strikes me as nuts, because people who paint figures, way back since the beginning of recorded history, have painted nude figures. Artists look at nudes not strictly because they are a salacious lot, but because that's how you learn about the human form. Paintings of unadorned human figures are beautiful and expressive and timeless.
I've asked a few times, why no nudes? The answer? Children might view the art show. So? We're not talking about pornography. What exactly would we protect children from? If you took those children to the world's great museums, they would see paintings of figures.
It is possible that art shows prohibit nudes because they don't want to distinguish between what is tasteful and beautiful and what is not. But then again, they have to do that with works of all other subjects. If it is really because of the children, that is just so wrong-headed. I think everybody wants to protect children, but honestly, there are a million things more dangerous to them than two-dimensional depictions of breasts and buttocks.