Kim Kardashian Says Her Newborn Son Is Daughter 'Chicago's Twin': 'He Looks Just Like Her'

Kim Kardashian hasn't shared any photos of her and husband Kanye West's fourth child just yet, but she says he's the spitting image of their 15-month-old daughter Chicago

Kim Kardashian West and Kanye West’s newborn son is just hours old, but he’s already taking after one member of their family in the looks department.

On Friday, just minutes after announcing that the couple had welcomed their fourth child, the Keeping Up with the Kardashians star, 38, told fans that their baby boy looks just like their daughter Chicago, 15 months.

“He’s also Chicago’s twin lol I’m sure he will change a lot but now he looks just like her,” she wrote on Twitter.

For now this physical descriptor will have to satisfy fan’s curiosity as the couple have yet to share any photos of their newborn.

Upon announcing her baby boy’s arrival, Kardashian West also shared on Twitter that their fourth child, who they welcomed via surrogate, was absolutely “perfect.”

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

PEOPLE confirmed on Jan. 2 that the couple would welcome a sixth member to their brood that also includes daughters Chicago and North, 6 next month, plus son Saint, 3.

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Kim Kardashian/Instagram. Inset: Michael Loccisano/WireImage

Kim Kardashian West/Twitter

News that the couple’s surrogate was in labor came Thursday on The Ellen DeGeneres Show, when Kourtney Kardashian stopped by during mom Kris Jenner‘s appearance for a surprise visit.

Along with quite the brood — her three children (Reign Aston, 4, Penelope Scotland, 6½, and Mason 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.

During the Jan. 14 episode of Watch What Happens Live, Kardashian West confirmed the pregnancy news herself after Andy Cohen asked if she was “working on another child.”

“We are,” the reality star responded, adding that the baby was due “sometime soon.”

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

During the episode, she also revealed that she had considered naming the baby boy Rob, after her brother Rob Kardashian, but had yet to make up her mind.

Kim Kardashian West and Kanye West with their children. Kim Kardashian/Instagram

A KUWTK source told PEOPLE following the pregnancy news that the KKW Beauty mogul and West, 41, “hoped to work with the same gestational carrier” they used with daughter Chicago “but it didn’t work out this time.”

“They are working with a second carrier now that 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.”

Another source told PEOPLE that while the spouses’ excitement was through the roof, baby No. 4 would “likely” complete their immediate family.

“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 about wanting four kids: two boys and two girls.”

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

Kim Kardashian West and Kanye West with their children Chicago, Saint and North. Kim Kardashian West/Instagram

While celebrating the imminent arrival of her fourth child in late April, Kardashian West’s famous friends and family gathered at her home for a “CBD & Meditation”-themed baby shower.

During the gathering, each person in attendance was given their own navy blue Yeezy slides and took part in a sound bath. In addition, baby blue-colored decorations were placed all around as well as a “Name Game” board where many suggested unique monikers for baby West.

Explaining how she decided on the bash’s theme, Kardashian West admitted she was “freaking out” because “the baby is coming in, like, two weeks.”

“I thought, what better way to celebrate than to have a little CBD?” the mom-to-be told her guests. “I thought it was kind of ridiculous to have a fourth baby shower. But I thought I’m freaking the f— out having a fourth kid. … So everyone have a puff and put on some oil.”