Kevin Burns approached Hefner in early 2005, which resulted in a pilot called "Hef's World" being filmed. This followed "Hef, his girlfriends, and friends contrasted with the staff". When presented to
E!, they told him to go back and interview each of the girlfriends to "see what you can get", which resulted in the premise shifting from Hefner to life in the mansion from a woman's perspective.
Seasons 1–5 The first five seasons centered around then-girlfriends,
Holly Madison,
Bridget Marquardt and
Kendra Wilkinson. In October 2008, Hefner's relationships with Madison ended for unconfirmed reasons (though the final episode of the fifth season discusses her unhappiness at the mansion in not being able to get married or have a family with Hefner) and Wilkinson left to continue her new relationship with football player
Hank Baskett. Marquardt also temporarily left at the same time to film ''Bridget's Sexiest Beaches'' for
The Travel Channel, but in January 2009 However, the focus of the show shifted to Hefner's new girlfriends, 23-year-old
Crystal Harris, and 19-year-old twins
Kristina and Karissa Shannon. The sixth season was also originally set to feature
Anna Sophia Berglund and Melissa Taylor as Hefner's second and third girlfriends, with the Shannon twins relegated to fourth and fifth position – according to a post by the company responsible for the show's opening sequence, that shows an incomplete rough cut of the new intro for the show. Madison did appear in the first two episodes of the season, and also appeared with Marquardt and Wilkinson in the episode "The Showering Inferno", which focused more on them than Harris and the twins. ==Episodes==