Robert Downey Jr. and Wife Susan Welcome Baby Girl

The "perfectly symbiotic" couple's new daughter joins sons Exton and Indio as part of the burgeoning Downey clan

Robert Downey Jr. and his producer wife Susan are the proud parents of a new daughter, People magazine is reporting. 

The "perfectly symbiotic" couple's most recent public appearance was at the Britannia Awards on Oct. 31, where a heavily pregnant Susan was on hand to see her husband pick up the Stanley Kubrick Britannia Award for Excellence in Film. On accepting the award, Downey singled out his wife and producing partner for special praise and quipped that she was literally "about to pop."

The latest addition to the Downey clan joins the couple's 2½-year-old son Exton and Downey's 21-year-old son Indio from his previous marriage. 

There has been no confirmation from the Downeys or their reps on the news as of yet.