Kim Kardashian Instagrammed a sweet new picture of the cousins on Friday, Jan. 24, captioning it simply "BFFs!"
Kanye West's 7-month-old baby girl and Scott Disick and Kourtney Kardashian's 18-month-old little one are all about family time. And of course, they adore 4-year-old Mason, who has seniority amongst the cousins.
"Its so cute how they all love each other so much!" Kim, 33, gushed in a Mobio Insider Q&A last month. "Penelope & North are bff! Mason bosses them around and is super protective."
But Mason, who for a while was the littlest in the Kardashian-Jenner clan, was once a teensy "bit jealous" of the family's new additions—particularly baby Nori! Kourtney explained to E! News back in September that Mase "has a special relationship with his Aunt Kiki [Kim], and she [Nori] takes away from that, so he's still kind of adjusting."
But it didn't take Mason long to figure out there's plenty of love to go around! And besides, no one could stay jealous of a sweetheart like baby North!
Catch new episodes of Keeping Up With The Kardashians, Sundays at 9 p.m., only on E!