Holly Madison (born December 23, 1979) is a model, showgirl, television personality, and New York Times best-selling author. Madison is known for her role in the E! reality television show The Girls Next Door and for her own series, Holly's World. In July 2015, Madison released her first book and memoir, Down the Rabbit Hole: Curious Adventures and Cautionary Tales of a Former Playboy Bunny. In May 2016, she released her second book, The Vegas Diaries: Romance, Rolling the Dice, and the Road to Reinvention detailing her career and dating life in Las Vegas.