While the older kids are still adjusting to life without Bruce Jenner/grandpa, Penelope Disick seems to be making a rather smooth transition.
In a teaser for the upcoming episode of Keeping Up With The Kardashians, Kourtney Kardashian tried to tell a bored-looking Kim Kardashian what her daughter recently said.
"We were reading a bible book, and the angel in the book was this person with long hair and a white long dress,” Kourtney, 37, told Kim.
“Penelope was like, ‘That looks like my grandma.’”
Kourtney was confused, and went through her mental rolodex of people who could possibly fit that name.
"I was like, ‘Which Grandma? Bonnie?’ She was like, ‘No.’ I was like, ‘Lovie? GG?’
"And she was like, ‘No.’”
While Kim's eyes started to glaze over, Kourtney continued.
“She goes, ‘My grandma that came with us to see Zootopia. Caitlyn.’”
Kim feigned fascination over the story, then went back to whatever was more interesting on her computer.
It's kind of a big deal for one of Kourtney's children to refer to Caitlyn as "grandma," since the former Olympian only transitioned from Bruce to Caitlyn in the spring of 2015.
When Kourtney appeared on Kocktails With Khloe in April, she explained that Penelope and her cousin, North West were too young to get confused by Caitlyn's new identity.
"The little ones, like North and P., they don't know the difference, which is the innocence of children," Khloé pointed out after Kourtney told the story.
"They know her as just Caitlyn."
Mason, 6, a bit older, so his reaction was a bit more guarded, having known Caitlyn as Bruce or "grandpa" his entire life.
"Mason was uncomfortable but [would] kind of, like, be distant to Caitlyn, but Caitlyn ... understood and handled it perfectly," Kourtney said.
Even after her transition, Caitlyn told her kids it was perfectly fine for them to still call her "dad."