This article hints that Stable Diffusion can at least generate normal looking nude women: https://techcrunch.com/2022/08/12/a-startup-wants-to-democra...

There are attempts to gather porn images and train or fine-tune existing networks on it, here's a recent attempt by an art student mentioned in the article above (NSFW!!): https://www.vice.com/en/article/m7ggqq/this-furry-porn-ai-ge...