Ouvi hoje, no noticiário, que faleceu a primeira pinup, Bettie Page, a que deu origem ao termo. E não é que o site Wikipedia já estava atualizado? Veja: “Bettie Page (April 22, 1923 – December 11, 2008) was a former American model who became famous in the 1950s for her fetish modeling and pin-up photos. She was also one of the earliest Playmates of the Month for Playboy magazine.” Como suas fotos passaram a ser penduradas (pinned up) na parede, surgiu o termo “pinup girl”.
1. that is or can be pinned up on or otherwise fastened to a wall a pinup lamp
2. (informal) designating a person whose sexual attractiveness makes her or him a suitable subject for the kind of pictures often pinned up on walls; such a person, picture, etc. (calendar girl, playmate, centerfold girl, gatefold girl; see nude)
She was China's first pinup girl and later Hong Kong's premiere sex phone girl.
It's a virtual pinup calendar that could have used some more variety.
Source: Your Dictionary