AceShowbiz -

Is Kris Jenner planning a revenge memoir about Caitlyn Jenner? That's what OK! magazine has reported. According to the publication, the 61-year-old momager is "writing her own memoir with an eye toward taking her ex down."

Kris is reportedly "outraged" over the "backstabbing lies" that are featured in Caitlyn's book titled "The Secrets of My Life". A source tells the mag that the "Keeping Up with the Kardashians" star is planning to "blow the lid off her marriage to pretransition Bruce."

That means accusing Caitlyn of being an "absentee dad and a cold and distant husband" and denying "Cait's claims that Kris knew early on about her gender issues," according to the source. The mag even asserts that Kris was first asked to pen a book when Caitlyn transitioned two years ago, but she didn't do it for the sake of her family's peace.

"Now she feels she has no choice but to tell her side of the story," the source says, before claiming that Kris is "deep into writing" and already has "seven-figure offers" from publishers. "Kris sees this as a win-win: She'll turn the tide of opinion back to her, and she'll get revenge on Cait," the source adds.