Her former co-Hugh Hefner girlfriend Holly Madison has some harsh words about her in her new book, and the claims the ex-Playmate made about her could lead to new questions about just how valid Kendra Wilkinson's marriage problems with Hank Baskett were last year.

Kendra Wilkinson Calls Hank Baskett 'Unrealistic'

In her new book, Down The Rabbit Hole, Madison called Wilkinson "the fakest person I've ever met" and claimed that things she previously said about life in the mansion were false--hinting that she manufactures stories to make herself seem more special and important.

"...She was just another blonde girlfriend--and life at the mansion wasn't all she imagined it to be," Madison wrote. "In Kendra's book Sliding into Home, she describes Hef asking her to be a girlfriend and handing her a house key before he invited her up to the bedroom. Now, I don't know if Kendra is trying to sound extra-desirable, innocent, or if her memory is just super rusty, but of course that's not how it really went down. Hef isn't stupid. He never asked anyone to become a girlfriend before they joined him in bed. And he never made a habit of carrying around extra sets of room keys."

Kendra Wilkinson Has Harsh Words For Hank Baskett

The accusations come as Wilkinson and Baskett's marriage troubles from last year (Baskett allegedly cheated on his wife with a transsexual model while she was eight months pregnant with their daughter) play out on television for the fourth time on Marriage Boot Camp: Reality Stars. Since the scandal broke one year ago, the couple has acknowledged their troubles on their own reality show, Kendra on Top, Wilkinson's appearance on I'm a Celebrity...Get Me Out Of Here! and on Watch It Live With Kendra and Hank.

The couple has since claimed to have worked through their problems, and be stronger than ever.

The accusations also came as Wilkinson reportedly prepares to film an appearance on another reality show, Food Network's Worst Cooks In America, where she will compete in a celebrity edition of the show alongside The Bachelor's Chris Soules, Dean Cain, Jaleel White and JWoww among others.

Wilkinson appeared to confirm that she would be on the show by sharing an Instagram post of herself in a New York City taxi with both Soules and Cain.

"A very random trio...#ChrisSoules #DeanCain #takingacab #goodtimes #goodpeople #nyc," she captioned the image.

 A very random trio... #ChrisSoules #DeanCain #takingacab #goodtimes #goodpeople #nyc

A photo posted by @kendra_wilkinson_baskett on Jun 10, 2015 at 12:24am PDT

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Kendra wilkinson, Hank Baskett