The Playmate catfight is on as Kendra Wilkinson came to the defense of Playboy mogul Hugh Hefner and slammed Holly Madison in the wake of her tell-all memoir regarding the life in the famous mansion.

"It's pretty sad," she told People magazine. "It makes you question the timing, and it makes you wonder, 'Wow, she wants real revenge.' At the end of the day, true colors shine."

"The one thing she truly wanted was a piece of that stock, a piece of Playboy and a piece of Hef's will," Hank Baskett's wife said of Holly Madison. "She considers herself a failure because she did whatever it took to get that and she didn't get what she wanted in return. Hef is the most amazing human being."

In her memoir, "Down the Rabbit Hole: Curious Adventures and Cautionary Tales of a Former Playboy Bunny," Holly Madison didn't spare Kendra Wilkinson from criticism as she said that the reality star acted like a diva around her and Bridget Marquardt during the axed show, "Girls Next Door."

"Kendra's and my relationship has definitely been weird," she said. "I feel like, over the years, I've known like three different people."

When they first met, Holly Madison said that Kendra Wilkinson was a really nice girl then during filming for "Girls Next Door," which chronicles the experiences of the three Playmates inside the Playboy mansion as girlfriends of Hugh Hefner, Hank Baskett's wife reportedly morphed into "this girl who's not a girl's girl and is very competitive and pushes away other girls."

Former Playboy Playmate Holly Madison, however, credited Kendra Wilkinson for having "grown into this really different person" after marrying Hank Baskett.

But Kendra Wilkson told People that Holly Madison was just bitter. "Behind the scenes, people that actually know the truth are laughing their asses off. This is not even real. This person is out for revenge," Hugh Hefner's former girlfriend said.