The 30-year-old reality star rails against the 35-year-old television personality in the People clip for Madison's unflattering portrait of Wilkinson and Hefner in her memoir, Down the Rabbit Hole: Curious Adventures and Cautionary Tales of a Former Playboy Bunny.
Madison caused a stir when she released the book in June, claiming Hefner offered her drugs and pitted the girlfriends against each other, and called Wilkinson the "fakest person" ever. The preview sees Wilkinson prepare to confront Madison at a signing for the memoir.
"I can't believe she's getting away with saying stuff like this, making it seem like they're facts," the star said. "Someone needs to have a voice against this. Hef won't do it. He's too nice a guy. It's just weird how someone can get away with such a thing."
"She's living as a fake cartoon, I think," she reflected. "She's not living on Earth with us. And that's how it felt, all those years living there. She really played this role. This fantasy type of role. It wasn't because of Hef. Hef never told her and forced her to do that. Maybe that's why he didn't marry her."
Wilkinson and Madison simultaneously dated the 89-year-old Playboy founder from 2004 to 2008. Wilkinson went on to marry Hank Baskett in 2009, and shares 5-year-old son Hank, Jr., and 16-month-old daughter Alijah with the 33-year-old retired NFL player.