Pin Up Girls

A pin-up model (known as a pin-up girl for a female and less commonly male pin-upfor a male) is a model whose mass-produced pictures see wide appeal as popular culture. Pin-ups are intended for informal display, i.e. meant to be "pinned-up" on a wall. Pin-up models may be glamour models, fashion models, or actors.

Pin-up model - Wikipedia

https://en.wikipedia.org/wiki/Pin-up_model