Yes, I've tried it with the other showers and bathtubs while testing, which led to me trying to force nudity with the SimBlender and ACR woohoo to no avail. They stay in their everyday clothes, but the black-haired aliens and non-aliens have no problems at all.
Sooo, I've attempted to make an alien skintone with the correlated template and there's two main issues. First teens. Initially with the brown hair, teen boys got the teen girls face, but more of an issue is that all the alien skintones only share the one fit/fat state as the black haired one, and with sometimes vastly different skins, green, turquoise, blue and purple that's a bit... noticeable and even bothersome when someone has a purple head but green body. Removing "fitness fix" doesn't work either since while it fixes everyday going around then I suffer from floading head syndrome.