This is fascinating, but I'm not sure it's as unusual as presented. I've done a lot of studio photography, including a lot of nudes. Many serious art models act

This is fascinating, but I'm not sure it's as unusual as presented. I've done a lot of studio photography, including a lot of nudes. Many serious art models actively seek out photographers they admire and lobby to work for them. Many of them have other careers, and don't depend on modeling for income. For them, modeling is artistic expression itself, and they are building a portfolio, a body of work. This leads to a much more equitable division of control between photographer and model, as opposed to the more common situation of models paid to do as the photographer wishes - putting the photographer fully in charge and in control. As an aside, I've found that models fall into two broad classes - those who refuse to do nudes, and those who prefer to do nudes. My first model who didn't come from within my own circle of friends (we were introduced by a mutual friend for a project I had) was actually kind of baffled by the idea of non-nude modeling - why would anyone want to wear clothes for art? And she was stunning. She actually rarely works with other photographers, mostly photographing herself (I refuse to call that work "selfies"). At any rate, the impulse to model nude, and to build a personal portfolio, is just as normal as any other artistic interest.