Robert Downey Jr. and his wife Susan are expecting their second child together.
The couple are already proud parents to son Exton Elias, four, and Robert has an older son, Indio, 20, from his first marriage to Deborah Falconer.
Robert shared the happy news on Twitter, writing the short but sweet message:
"Yo. Susan. Me. Baby. Girl. November. Scorpio?"
Robert and Susan met in 2003, and married two years later.
The news will give the Downey family something positive to focus on following Indio's arrest for drug possession in June.
Indio was arrested on June 29 for possessing cocaine, and Robert confirmed the news shortly after, saying the family were fully behind getting him help and support.
In a statement, Robert said:
"Unfortunately there's a genetic component to addiction and Indio has likely inherited it. Also, there is a lot of family support and understanding, and we're all determined to rally behind him and help him become the man he's capable of being.
"We're grateful to the Sheriff's Department for their intervention and believe Indio can be another recovery success story instead of a cautionary tale."
Robert himself battled drug addiction in the 1990s. He went to rehab, recovered, and has since starred in Hollywood blockbusters Iron Man, The Avengers and Sherlock Holmes.