Nothing but love! Brandon Jenner is “sure” that his stepsister Kim Kardashian and her husband, Kanye West, are soaking up every precious moment with their fourth child. Their new baby boy arrived May 9 via surrogate and the musician is certain that the parents are “over-the-moon.”

“I know what that’s like, having a child of my own … It’s a sacred time,” the 37-year-old dished to Us Weekly during the premiere of his new single, “Death of Me,” at a private residence in Malibu on Saturday, May 11. Although he admitted that he hasn’t checked in on them yet, the dad-of-one is well-versed in those first few weeks with a newborn.

“The Best of Us” artist shares 3-year-old Eva with his ex-wife, Leah Jenner. The pair split in September 2018 after six years of marriage.

Brandon Jenner Leah Jenner marriage relationship broken up baby
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As for Kim, 38, and Kanye, 41, they’ve given a few small updates that sound like they’re fully enjoying being a family of six. The couple shares three other children — North, 5, Saint, 3, and Chicago, 16 months. Besides gushing that their new son is “Chicago’s twin” on Twitter after his arrival, the Keeping Up With the Kardashians star revealed that he also has a very sweet demeanor.

“We celebrated our baby boy about a week ago and now he’s here! He’s so perfect! Here are some pics of my CBD baby shower,” the KKW Beauty founder captioned a series of photos on Instagram. “I was freaking out for nothing because he is the most calm and chill of all of my babies so far and everyone loves him so much.”

The starlet’s famous friends flocked to support the new mom-of-four. “Congratulations gorgeous! So happy for you,” Paris Hilton commented while Kimora Lee Simmons added, “You are blessed!” Courtney Love gushed, “Gorgeous bunch of goddesses! Such a gorgeous amazon tribe! Beautiful.” She obviously has an outpouring of support.