Nude paintings are as old as mankind. And this artistic genre is still beloved today. For example, any photo showing a nipple needs censoring before it can go on Facebook. This ruins the artistic impact of nudes. Twitter is more benevolent here: Even an artfully censored photo still looks artless.
These points must be clarified before the shooting: Meet with your model a few days before the photo shooting and discuss the whole procedure. Discuss also the intended poses and visual messages. There is nothing worse than the photo ideas of the photographer not matching the ideas of the model.