The K clan isn't going to be happy she's airing their dirty laundry!

Caitlyn Jenner makes a lot of claims in her new memoir Stories of my Life, and one of them is that Robert Kardashian Sr. knew OJ Simpson was guilty of murdering Nicole Brown Simpson and defended him anyways! The reason? The lawyer wanted to get back at ex Kris Jenner for remarrying. Seems a little far fetched...

The transgender reality star says that years after OJ was found innocent, Kardashian Sr. confessed to her during a car ride that he wouldn't have minded losing the case for his pal. "I would’ve been okay with it if they had gotten him in the first trial," he allegedly told Jenner. "The implication was obvious that he believed O.J. was guilty," the Olympian wrote.

Something that's bound to make his stepdaughters mad? He says that both Kim and Kourtney believed OJ was innocent!

The I Am Cait star was never a fan of The Juice, either.

"I believe he got away with two savage murders. He was the most narcissistic, egocentric, neediest a**hole in the world of sports I had ever seen, and I had seen a lot of them," the 66-year-old revealed.

This isn't exactly shocking. Look at Robert Kardashian Sr.'s face when the verdict was read in the below video!