Holly Madison has accused Crystal Hefner of copying her writing style. The 44-year-old star was one of Hugh Hefner’s girlfriends at the infamous Playboy mansion and in the years that followed penned her best-selling memoir ‘Down the Rabbit Hole’ but felt like she was reading her own book when she picked up a copy of a memoir written by the late magazine publisher’s widow. Speaking on the ‘Lady Gang’ podcast, she said: “Anybody who’s read my book that came out eight years ago and then read her book, tell me the narrative voice doesn’t sound exactly the same. “When I say narrative voice I don’t …