Is it possible to model for nude art and be a Christian?

Is it possible to model for nude art and be a Christian? One of my really good friends models for nude art. I'm not going to lie, she has a really nice body with the hour gl shape and is really fit and in good shape. I can see why she models for nude art, though one thing about her is that she's a Christian. I asked her if that goes against her religion to model for nude art and she says it doesn't. She tells me that art is a form of expression and that nude art is a beautiful form of art that has been around for many years. She has invited me to some of her art sessions and from what i noticed it seems as though she models for sensual nude art, with her posing with other female models in sensual artistic poses. Is it possible to model for nude art and still remain a faithful Christian?