Caitlyn Jenner confronts Kris about not being invited to Kylie's graduation: 'It was a slap in the face'

A showdown between Kris and Caitlyn Jenner on I Am Cait got heated when their kids were brought into the conversation.

Watch the latest clip from the show above to see Caitlyn, 65, confronting Kris, 59, about why she wasn't invited to daughter Kylie's high school graduation in July.

Yep, it's pretty tense.

In the clip, the reality TV star also brought up Caitlyn's Vanity Fair article that claimed the momager "mistreated" her during their 23-year marriage.

"I think in a lot of ways she became less tolerant of me. Then I'd get upset, and the whole relationship kind of fizzled," Caitlyn told the magazine.

But that's not the only difficult topic the pair have discussed on the series so far.

In the season teaser below, Kris broke down in tears about their marriage being "a distraction"… 

I Am Cait airs Monday's at 9.30pm on E! Foxtel.