A new promo clip for reality show "Kendra On Top" shows that Kendra Wilkinson does not seem pleased en route to confront her "The Girl Next Door" co-star over her so-called "lies" in the tell-all memoir, "Down The Rabbit Hole: Curious Adventures and Cautionary Tales of a Former Playboy Bunny," according to Entertainment Tonight.

"This is f***ed up," she said of the book. "I can't believe she's getting away with saying stuff like this."

"What Holly is saying is extremely false," Wilkinson said in the clip, according to CBS News. "I'm like, 'Where did this s*** come from?'"

The pair had a falling out after their show ended, and Holly's new memoir isn't helping. The publication explores her time at the Playboy Mansion and her relationship with ex Hugh Hefner.

Thirty-five-year-old Holly describes her time at the mansion in her book as a "nightmare" filled with debauchery, group sex, drugs and alcohol. In the book, she also accused Hefner of emotional abuse and giving her "thigh-opening drugs." Holly mentions that things were so bad that she even considered suicide, while Hefner has denied these allegations.

In the video clip, Wilkinson and her friend planned to crash Madison's book signing to confront her and say, "Sign this, b***ch."

"She's living as a fake cartoon, I think. She's not living on Earth with us. And that's how it felt, all those years living there," says Wilkinson, according to People. "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 she didn't marry her."

"Someone needs to have a voice against this. Hef won't do it. He's too nice of a guy," she adds. "It's just weird how someone can get away with such a thing."

The sneak peek ends on a cliffhanger as she is about to make her way into the book signing.

"This is disgusting. I'm not going to let this bitch get away with something like that."

When asked on Twitter about whether a confrontation took place at the signing, Madison denied that it happened using the hashtag #SpoilerAlert.

Watch the video clip below:

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