I also just remembered that the harpies in the game have their breasts fully exposed, so that's yet another reason on why I don't see an issue with the request for a topless female character.

The game does not try to hide nudity even in front of an in-game kid such as Myrkon, so it really just comes down to whether Larian would make it an available feature or not, as I see no moral ground from which it would not be acceptable.

[Linked Image from bg3.wiki] Minthara's Compendium Of Issues