TheKeeping Up with the Kardashiansstar, 38,confirmed on Twitteron Friday that she and her rapper husband have welcomed their fourth child, a son, via surrogate.

“He’s here and he’s perfect!” Kardashian West tweeted.

PEOPLE confirmed on Jan. 2 that the couple wouldwelcome a sixth member to their broodthat also includes daughtersChicago, 15 months, andNorth, 6 next month, plus sonSaint, 3.

Kim Kardashian Instagram

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Kim Kardashian West/Instagram

https://www.instagram.com/p/BrQcEVmnwyI/Kim Kardashian West/Instagram

Along with quite the brood — her three children (Reign Aston, 4,Penelope Scotland, 6½, andMason Dash, 9) plus Chicago, Saint and North — Kourtney, 40, brought the news that Kardashian West’s surrogate would be giving birth shortly, explaining why her sister wasn’t on the show as planned.

“What! What are we doing here?!” said Jenner, 63, visibly shocked, adding, “For how long?”

“And nobody knows, so everyone in the audience don’t tell,” Kourtney explained while laughing.

Kourtney Kardashian, Kris Jenner and family.Warner Bros.

Kris Jenner on the Ellen DeGeneres Show

Kourtney Kardashian, Kris Jenner and family.Michael Rozman/Warner Bros.

Kris Jenner on the Ellen DeGeneres Show

During the Jan. 14 episode ofWatch What Happens Live, Kardashian West confirmed the pregnancy news herself afterAndy Cohenasked if she was “working on another child.”

“It’s a boy, I think it’s been out there,” Kardashian West told the host. “I got drunk atour Christmas Eve partyand told some people. I can’t remember who I told because I never get drunk.”

Multiple sourcespreviously confirmed to PEOPLEthat the couple’s fourth child would be a son.

Kanye and Kim Kardashian West.Rich Fury/Forum Photos via Getty

Kim Kardashian And Kanye West Attend The Travis Scott Astroworld Tour At The Forum

RELATED VIDEO:Kim KardashianandKanye WestExpecting Fourth Child Via Surrogate

AKUWTKsource told PEOPLE following the pregnancy news thatthe KKW Beauty moguland West, 41, “hoped to work with the same gestational carrier” they used with daughter Chicago “but it didn’t work out this time.”

“They areworking with a second carrier nowthat is pregnant and will give birth in the spring. Everything so far has been smooth,” the insider added.

“Just like the last time, Kim is very involved with the carrier. Kim goes to doctor’s visits with the carrier and makes sure that she has everything she needs.”

Marcus Hyde

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Kim Kardashian West/Twitter

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“Kim has always wanted four kids. She talks about it all the time,” explained the insider, adding, “She likely won’t have any more after this.”

A third source divulged to PEOPLE that the Kardashian West and the Yeezy designer have “always talked aboutwanting four kids: two boys and two girls.”

“That’s always been the plan,” the latter source said. “They definitely want a boy.”

Kim Kardashian/Snapchat

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Kim Kardashian/Instagram

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“Kanye says that being a dad is the most important thing that he does, and despite his other problems, he’s aninvolved, loving dad to his kids,” the insider told PEOPLE.

And while West is famous for his music andYeezy fashion line, when he’s home, he’s content with just being “Dad.”

“Heloves the innocence of children; they’re not judging him. They don’t care what he does for a living,” added the source. “They don’t read the tabloids. To them, he’s just Dad.”

Kim Kardashian West.Olivia Pierson/Instagram

Kim Kardashian baby shower

Olivia Pierson/Instagram

Kim Kardashian baby shower

source: people.com