During their relationship, Caitlyn and Kris appeared on the popular reality TV series Keeping Up with the Kardashians.
They announced their separation in 2013 and two years later, Caitlyn came out as transgender.
In a brand new interview, she has opened up about her relationship with Kris, and how it has suffered over time.
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Caitlyn told the hosts of This Morning: “Well Kris, I really never talk to anymore. Yeah, it’s sad.
“If there’s any communication, my manager kind of talks to her.”
The reality star then admitted that she is ‘much closer’ to her kids on the Jenner side: Brody, Brandon, Burt, and Cassandra Marino.
She continued: “When you have as many kids as a I have, you’re closer to some than you are to others.
“Through that side of the family [Kardashians], I certainly see them. We do this, we do that. I’m much closer to the Jenner side, with Brandon and Brody and my son, Burt, my daughter Casey…but, yeah, Kris… I really don’t have any more contact with her.”
Elsewhere in the interview, Caitlyn reminisced about her initial encounter with Kris, which occurred before her transition, when she was still known as Bruce.
She said: “I had been single for six years, and really kind of struggling with myself and who I was and how I fit into the world.
“I was just turning 40 and met Kris on a blind date, we hit it off from day one. Was it love at first sight? Pretty close to that, yes.
“I was totally impressed with her and how she lived her life – she had four kids, I had four kids… and we got married five and a half months later! It was very quick.”
Caitlyn’s appearance on This Morning was to promote her new three-part tell-all documentary series House of the Kardashians.
A teaser featuring Caitlyn has been shared and in it, she is asked what it was like to work with her ex-wife.
In response to this question, the former Olympian smiles, pauses and laughs before saying: “Good question.”
House of the Kardashians is coming to Sky Documentaries on Sunday, October 8.