Robert Downey Jr.'s wife Susan has given birth to a baby girl.
The newborn - who is yet to be named - adds to the couple's brood of two-a-half-year-old son Exton, as well as Robert's son Indio, 21, from a previous marriage to Deborah Falconer, PEOPLE magazine reports.
Last week, the actor made a heartfelt tribute to Susan, 40, and his soon-to-be-born daughter at the BAFTA Los Angeles Jaguar Britannia Awards, where he took home the Stanley Kubrick Britannia Award for Excellence in Film.
"It's just the uncertainty of how nowadays you have all these things where you think you have much more of an understanding of what you're going to get. And then this little soul lets herself be known to you, and it's just like, You don't know anything. It's great!
"How is she still so darn pretty and functional and mood-stable?" he added of his expectant wife.
Robert - who married Susan in 2005 - previously admitted he was really excited about becoming a father for the third time and having a sister for Exton, but the 49-year-old star admitted he was nervous about raising his first daughter.
"I've never had a daughter before, so I don't know what really prepares a dad. I'm asking around. But I did my part and now I'm just going to show up and do what I'm told," he said.