Pin-up Girls By Alberto Vargas

In professionally published fan magazines for films and television series, a posed photograph of actors or actresses from the subject matter, but which might also showcase specific scenes from the subject matter in photograph form (called stills) are occasionally called pin-ups. The label is very casual, though, as these types of fan media are more accurately described as posters.
Pin-ups are also referred to as "cheesecake", the male counterpart being "beefcake".