When she turns around and shows those big fat naturals? By casting Pam Grier as the star, these films discovered a previously buried type.
The rest of the time, movies show naked actors and actresses because people like to look at other people who are naked.
Or you might know her from the 1974 movie The Night Porter.
We like our women like we like our coffee, looking like Pam Grier! Director Quentin Tarantino remarked that she may have been cinema's first female action star.