The actress gave birth on Saturday.
The pair are already parents to 1-year-old daughter Maverick, while Nickson is also dad to 8-year-old daughter Paisley.
The singer broke down her baby boy's unique moniker bit by bit in a Twitter post Tuesday.
The Tesla CEO introduced "X Æ A-12 Musk" to the world, and fans are still figuring out how to pronounce it.
The CNN newsman split from Benjamin in 2018.
The CNN newsmen were all smiles as they chatted about Cooper's new baby boy on Monday.
The actress shared the news in a heartfelt message to Instagram on Monday.
From the first signs of trouble to their contentious court filings, here's a timeline of the estranged pair's turbulent divorce.
Cohen also shared how much he's looking forward to watching his own son, Ben, grow up and become pals with Wyatt.
The actor shared a sweet new pic of his baby boy on Saturday.
Guthrie shared the results on Instagram.
The journalist welcomed a son, Wyatt Morgan Cooper, on Monday.
Roc and Roe still had an epic celebration from inside their home!
The CNN anchor shared the exciting news and first family photo on Thursday.
