Photo: Kevin Mazur/WireImage

Kris JennerandCaitlyn Jennerare peacefully co-parenting.
After a few years of tension between the exes, Kris and Caitlyn have put their issues aside for the sake of their children.
“Kris and Caitlyn interact when they have to for the kids,” an insider tells PEOPLE. “It’s important for Kylie and Kendall. They can be cordial, but like most exes, they’re never going to be best friends.”
While Kris and Caitlyn do not spend time together on their own, they’ve reunited on several occasions to support their daughtersKendallandKylie Jenner.
Still, a source at the bash says Kourtney, Kim and Khloé Kardashian ignored Caitlyn.
“Things are still frosty between them,” the second source explains. “There are too many hurt feelings between Kris and Caitlyn and the older girls.”
As for how the Jenner parents behaved at the party? “It wasn’t a happy, laughing interaction between Kris and Caitlyn. It was more like,this is a moment where we’re coming together for the kids. It was very brief.”
Earl Gibson III/Getty Images

Just last week, Caitlyn and Kendall were spottedgrabbing dinnertogether in Los Angeles — though Caitlyn previously admitted that she’s struggled to maintain close relationships with her kids.
RELATED VIDEO:Caitlyn JennerTalks About Her Newest Grandchild for the First Time SinceKylie JennerGave Birth
The former Olympian, whopublicly came out as transgenderin 2015, shares son Burt, 39, and daughterCassandra, 37, with ex-wifeChrystie Crownover; sonsBrandon, 36, andBrody, 34, with ex-wifeLinda Thompson; and Kendall, 22, and Kylie, 21, with Kris.
Caitlyn alsohelped raiseKris’ four children with thelate Robert Kardashian:Kourtney, 39,Kim, 37,Khloé, 33, andRob, 31.
But Caitlyn has become estranged from the Kardashian side of the family, though shemaintains relationshipswith Kendall and Kylie. The Kardashian sisters, as well as Kris, have been open about the fact that passages of Caitlyn’s 2017 memoircreated a riftin the family. (In the book, Caitlyn alleged Krisknew more about her gender identity crisisthan she says she did.)
“We’re just human beings; we’re going to be here for a very short time,” Caitlyn later added. “We come and we go and at the end, when it’s all said and done, hopefully your family is going to be there.”
source: people.com