Just use mods like those nasty, lore-breaking mods that were made for Skyrim. I don't agree with this at all and if anything, I'm so glad Baldur's Gate doesn't feed into the oversexualization of female characters like almost every other game does. I am so SICK of it.
Could you elaborate on whats nasty about sexy male/female look armors in a fantasy game? This might be a cultural difference, are you American by any chance? lol. For me sexy looking does not mean X rated incredibly nude armor. Its just , you know, sexy looking. Like a sexy looking party dress.