Kris Jenner on Caitlyn Jenner memoir: "It's all made up".

Video via E!

Kris Jenner has said she is extremely “disappointed” over the contents of Caitlyn Jenner’s tell-all memoir, The Secrets of My Life, which is due for release on April 25.

In a preview for this week’s episode of Keeping Up With The Kardashians, Kris tells daughters Kim and Khloe that she had received an advanced copy and was confused by what her ex-partner had written.

"I read it and basically the only nice thing she had to say was that I was great socially at a party one time," 61-year-old Kris tells her daughters in the clip.

"None of it makes sense. Everything she says is all made up."

Yesterday, it was revealed that Caitlyn wrote about being "uncomfortable" when she slept with her former wife during their 24-year marriage.

"Kris and I have good and frequent sex at the beginning," Caitlyn wrote in the book.

Caitlyn and Kris Jenner were married for more than two decades. Image via Getty.

"I tell Kris about my gender issues before I make love to her. This will always be a subject of dispute between us.

"She insists that she was taken by surprise by my ultimate transition to Caitlyn, which obviously means in her mind that she did not know enough."

It's this statement that has angered Kris the most.

"Why does everything have to be that Kris is such a bitch and an asshole," she asks her daughters in the clip.

Khloe Kardashian shocked — Kris expresses her anger to daughters Kim and Khloe in the clip. Image via E!

She said that whenever she asked her then-husband what was "going on", Caitlyn always said, "you just would never understand".

"And then all through the book...'Kris knew, Kris knew before I even made love to her'.

"I'm like, what?"

Kris now says she is "done" trying to improve her relationship with Caitlyn.

caitlyn jenner memoir — Caitlyn's memoir is due for release April 25. Image via Amazon.

"I've done nothing but open up my home and my heart to a person who doesn't give a shit. So, I'm done," she says.

"I'm not going to be used as a person who benefits someone else’s life just to make them look better. I just can't sit back and be an enabler anymore.

"I've never been so angry and disappointed in somebody in my whole life. I'm done."

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