This photography style is fairly obvious and divided into 2 genres, Topless & Nude. For both, clothing may still be worn, but our definition is that if nipples are visible, then the image is considered topless. If genitals or the genital area is clearly visible, then it is considered a nude picture. A model may have open legs within this genre, provided the image is not deliberately sexual in nature.
Daring poses, which many ladies like to include as part of a photo set. Usually these styles would follow lingerie and implied poses, allowing confidence to grow during a photo shoot, before baring all. Here we choose to not show anything too graphic, but demonstrate some typical ideas.