NEW YORK, NY - MAY 15: Hilaria Baldwin and Alec Baldwin attend during 2018 Disney, ABC, Freeform Upfront at Tavern On The Green on May 15, 2018 in New York City. (Photo by Dimitrios Kambouris/Getty Images)
Alec Baldwin is a father again.
He and wife, Hilaria, announced Thursday that she had given birth to their fourth child, a son.
"He's here! He's perfect! 8lbs 2oz #wegotthis2018," they captioned a photo showing the couple with their new baby on Instagram.
It's the third boy for the pair, who married in 2012.
The new baby joins siblings Leonardo Ángel Charles, who is 20 months old, Rafael Thomas, 2, and big sister Carmen Gabriela, 4.
Baldwin, 60, also has a 22-year-old daughter, Ireland, from his former marriage to actress Kim Basinger.
In the May edition of Hola! US, Hilaria, a 34-year-old yoga and wellness expert, said that she, and not her actor husband -- who has been known to be mercurial -- is the alpha parent.
"I am the boss at home and everybody knows that. They call me that," she said. "You ask them, 'Who is the boss?' and they'll say, 'Mommy is the boss.'"