All eyes on Hugh Hefner's former girlfriend after she revealed secrets of the Playboy Manison

In 2015, Holly wrote a tell-all book about her time in the Playboy Mansion titled, Down the Rabbit Hole: Curious Adventures and Cautionary Tales of a Former Playboy Bunny.

Yesterday Playboy mogul, Hugh Hefner passed away at the age of 91.

Since his passing tributes have been flooding in from friends, family, celebrities and former playmates.