Kim Kardashian and Kanye West welcome their fourth child

Baby No. 4 has arrived for Kim Kardashian West and Kanye West.

The reality star/mogul tweeted about the new arrival on Friday.

“He’s here and he’s perfect!” she wrote.

The pair welcomed the baby via surrogate, and he joins sisters North, 5, and Chicago 1, and brother Saint, 3.

Kardashian West later added on Twitter that the new baby looks so much like his sister, he could be “Chicago’s twin lol.”

On “The Ellen Show” Thursday with her nieces and nephews, Kourtney Kardashian said her sister was supposed to join her but couldn’t because the surrogate was in labor.

Their mother and family matriarch, Kris Jenner, was also on “The Ellen Show” and she appeared surprised by the news, saying she was not aware that labor had started.

Check out the clip of Kourtney Kardashian revealing the exciting news to her mother and Ellen, as posted to “The Ellen Show’s” YouTube channel:

There are no photos yet of the newest arrival, though Kim recently posted a picture of her other daughters on Instagram with the caption, “My babies are my life!”

The new baby’s name is sure to be of interest.

In January, Kardashian West said she had been Googling Armenian boys’ names in honor of her family’s heritage but hadn’t found anything.

Also in January, Kardashian West appeared on “Watch What Happens Live with Andy Cohen” alongside sisters Kourtney and Khloe, and she confirmed that she and Kanye West would be having a baby boy.

“It’s a boy,” Kardashian West revealed. “It’s out there. I got drunk at our Christmas Eve party, and I told some people, but I can’t remember who I told.”

Check out the clip from the show as posted to the “Watch What Happens Live” YouTube channel:

Just about a year and a half ago, in January 2018, the Kardashian West family welcomed their third baby, Chicago, also via surrogate.

This past January, the family celebrated Chicago’s birthday with an “Alice in ‘One’derland”-themed party, according to Kardashian West’s sweet Instagram post.

This latest baby to join the Kardashian West clan also arrived just a month after the birthday of her cousin, Khloe’s daughter, True, who turned one on April 12.

Kardashian West recently took to Instagram to post some adorable photos of her family at True’s big birthday bash:

So far, May has been a very exciting month for celebrity baby births.

On May 5, Amy Schumer and her husband welcomed their baby boy, Gene. Schumer announced the news on Instagram with the caption, “10:55 pm last night. Our royal baby was born.”

Schumer’s “royal baby” joke is referring, of course, to the latest British royal baby, Archie Harrison Mountbatten-Windsor, the son born to the Duke and Duchess of Sussex on May 6.

The royal couple’s official Instagram account posted images of their first public appearance with the baby, adding a caption of gratitude.

“Today The Duke and Duchess of Sussex are delighted to share their first public moment as a family,” reads the caption. “They are so incredibly grateful for the warm wishes and support they’ve received from everyone around the world, since welcoming their son two days ago.”

Congratulations to all the famous families and their new additions!

Story written by Lisa Respers France and Joe Sutton for CNN. Additional reporting by Simplemost staff. 

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