Former Playboy Bunnies Holly Madison and Bridget Marquardt revealed pictures of the playmates' genital area used to be auctioned off in a grim 'brown book'.
The duo discussed the dark side of Hugh Hefner's gigantic empire on their Girls Next Level podcast and opened up about the secret book.
Holly started dating the tycoon in 2001 when she was only 21 years old while Bridget was 28.