Playboy Playmate Crystal Harris rose to fame as one of Hugh Hefner's girlfriends along with Kristina Shannon and Karissa Shannon. The three were star in the sixth season of The Girls Next Doorhttp://www.usmagazine.com/celebritynews/news/meet-the-new-girls-next-door-1970241.

The reality series The Girls Next Door follows Hefner and his girlfriends (who were dating during the first season at the time of filming) Holly Madison, Kendra Wilkinson and Bridget Marquardt. The three Playmates lived at Heftner's Playboy mansion. The second season premiered October 11, 2009 with Harris and the Shannon twins taking over.

"Hef gave me permission to fill people in on the new updates as a voice from the mansion.FOX News: Hugh Hefner's Newest Girlfriend (January 6, 2009)

"No other girlfriends are in the mix at this time, but there are a couple that we have interest in. As for now, it is just us three."Daily News: Meet Playboy founder Hugh Hefner's other girlfriend (January 6, 2009)

"I believe in opening your heart and letting your walls down, it is better to have loved and lost, than to never have loved at all."Daily News: Meet Playboy founder Hugh Hefner's other girlfriend (January 6, 2009)