Kris Jenner sparked an argument with Caitlyn Jenner when she insisted her former spouse never told her she was transgender during their marriage.
The showbiz matriarch got into a heated argument with her former spouse - who was known as Bruce Jenner before her transition - while spending time with her and her friends in New Orleans, and insists the closest they came to having a discussion about the Olympian's struggle was when they talked about the possibility of having children together.
Asked if Caitlyn told her she was transgender "early on" in their relationship, Kris said "no", prompting her former partner to exclaim: "Oh I did too!"
Kris responded: "She keeps saying she told me but she didn't do it. What happened was a conversation in a driveway, he says to me, 'Do you ever want to have more kids?' And I said, 'Oh God no.' So he says, 'Oh either do I, that's like, that's great! And I couldn't have any more kids if I wanted to.'
"And he goes, 'Oh jeez you know back in the '80s I messed around with this or that and it kind of screwed up my sperm count but whatever.' "
Kris explained she thought it was "steroids" because "he was an athlete".
She added: "He never said it was oestrogen, he never said anything, he just said, 'I took some s**t in the '80s.'
"There was no, 'I am transgender.' "
However, Caitlyn disagreed and insisted she told Kris she "had a condition that I've been dealing with forever" and said "I was on hormones" which is why it "might be tough to get pregnant."
But in scenes airing on this weekend's 'I Am Cait', Kris, 60, then revealed her friends advised her to "have a bottle of wine and go have great sex."
And, after heeding their advice, the couple went on to have daughters Kendall and Kylie Jenner.