Sara Jean Underwood is an American model, television host and actress who was chosen as the Playmate of the Month for the July 2006 issue of Playboy magazine and later became Playmate of the Year in 2007. She is a former host of Attack of the Show! on G4.

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.