Holly Madison Cullen (born December 23, 1979) is an American model and television personality, best known for appearing as Hugh Hefner's number one girlfriend with Bridget Marquardt and Kendra Wilkinson on the reality television series The Girls Next Door. Although not a Playboy Playmate, she has appeared in nude pictorials with her Girls Next Door costars and fellow Hefner girlfriends Bridget Marquardt and Kendra Wilkinson. In 2009 she was as a contestant on the eighth season of Dancing with the Stars.