Robert Downey, Jr. and his wife are expecting their first child, People magazine reported Wednesday.
The thrilled "Iron Man" star and his wife of six years, Susan, 37, revealed the baby is due in early 2012.
"Robert and Susan could not be more excited over this news," a rep for the 46-year-old actor said in a statement. "They can't wait to welcome this new baby into their wonderful family."
Downey, Jr. has credited his film producer wife with helping him overcome his long-term struggle with substance abuse.
"The old saying is true -- behind every good man there's an incredible woman. I owe a huge amount, if not all, of my success to Susan. We make a great team," he told Ireland's Evening Herald newspaper last November.
The Oscar nominee also has a 17-year-old son, Indio, with his first wife, the actress/musician Deborah Falconer. They were married from 1992 to 2004.