Kris and Caitlyn Jenner have two very different versions of Caitlyn's coming out story.

The two split in 2013, and, when they sat down for dinner alongside Caitlyn's I Am Cait posse to discuss the 66-year-old reality star's coming out, it turned into a debate on what was or was not disclosed during their 23-year marriage.

"There was no, 'I am transgender,'" Kris claims when asked if Caitlyn ever revealed she was trans to Kris during their time together.

WATCH: Watch Caitlyn Jenner Kiss Kris Jenner in Extremely Uncomfortable 'I Am Cait' Moment

"She keeps saying she told me, but she didn't," Kris adds in a sneak peek at Sunday's episode of the E! docuseries, recalling one conversation they had years ago. "He says to me, 'Do you ever want to have more kids?' I said, 'Ugh, god no!' So he says, 'Neither do I! That's great. I couldn't have any more kids if I wanted to.' I went, 'Wait, what?' He goes, 'Oh, geez. Back in the '80s, I messed around with this or that and it kind of screwed up my sperm count, but whatever.' It could have been steroids, for all I knew, because he was an athlete."

"He never said estrogen, he never said anything," she recalls.

Caitlyn, meanwhile, says she remembers telling Kris she had "a condition" that she had been "dealing with forever" and that she was on hormones, which could affect their ability to get pregnant.

"My friend said, 'Have a bottle of wine and go have great sex,'" Kris concludes. "And we did and we had Kendall. And a minute later, we had Kylie. But none of that was, 'I want to be a woman.'"

WATCH: Caitlyn Jenner Tears Up While Trying on a Wedding Dress: I Can Finally Be 'Comfortable'

Caitlyn is now the face of M∙A∙C Cosmetics and her campaign -- which features the former athlete in a sexy bustier -- was unveiled on Thursday.

The lipstick shade is called "Finally Free" and, according to the makeup company, "100% of the selling price goes to the M·A·C AIDS Fund Transgender Initiative, to further its work in support of transgender communities."

Scott Disick recently opened up about how his kids reacted to Caitlyn's transition, saying they "don't really know exactly what's gone on." Hear what else he had to say in the video below.