Playboy is an American men's lifestyle and entertainment magazine, formerly in print and currently online. It was founded in Chicago in 1953, by Hugh Hefner and his associates, funded in part by a $1,000 loan from Hefner's mother.
A Playmate is a female model featured in the centerfold/gatefold of Playboy magazine as Playmate of the Month (PMOTM). The PMOTM's pictorial includes nude photographs and a centerfold poster, along with a pictorial biography and the "Playmate Data Sheet", which lists her birthdate, measurements, turn-ons, and turn-offs. At the end of the year, one of the 12 Playmates of the Month is named Playmate of the Year (PMOTY). Every Playmate of the Month is awarded a prize of US$25,000 and each Playmate of the Year receives an additional prize of US$100,000 plus a car and other discretionary gifts. In addition, Anniversary Playmates are usually chosen to celebrate a milestone year of the magazine. The use of the word "Playmate" in a sexual sense did not originate with Playboy, and was seen at least as early as 1950 in Vue magazine.
The centerfold or centrefold of a magazine is the inner pages of the middle sheet, usually containing a portrait, such as a pin-up or a nude. The term can also refer to the model featured in the portrait. In saddle-stitched magazines, the centerfold does not have any blank space cutting through the image.
Kristina and Karissa Shannon are American Playboy Playmates, porn stars and twin sisters.