From Wikipedia, the free encyclopedia. Hollin Sue Cullen, professionally known as Holly Madison, (born December 23, 1978) is an American model and television personality. She is widely known for being one of Hugh Hefner's girlfriends 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, Bridget Marquardt and Kendra Wilkinson. In 2009, she appeared as a contestant on the eighth season of Dancing with the Stars. Description above from the Wikipedia article Holly Madison, licensed under CC-BY-SA, full list of contributors on Wikipedia.