Los Angeles: Model Holly Madison "spent too many years" being afraid of Playboy boss Hugh Hefner, but insists she won't be silenced now.

The former Playboy model, who earlier claimed in her new memoir "Down the Rabbit Hole: Curious Adventures and Cautionary Tales of a Former Playboy Bunny" that she was mentally and emotionally abused while living with her former lover and his other girlfriends, says she doesn't care that he has denied her allegations, reports femalefirst.co.uk.