Michelle Williams and her husband, Thomas Kail, have grown their brood, Page Six can confirm.
The couple quietly welcomed a baby via surrogate six weeks ago, People first reported Thursday, making the actress a fourth-time mom and the director-producer a third-time dad.
“They couldn’t be happier to expand their family, and Matilda has been doting on her younger siblings,” a source told the magazine, referring to Williams’ 19-year-old daughter, whom she shared with late actor Heath Ledger.
The family reportedly has been spotted around their New York neighborhood with the new addition in tow.