• ROBERT JR. & SUSAN DOWNEY photo | Robert Downey Jr.

Credit: Stefanie Keenan/Getty Images

Published: Tuesday August 05, 2014 12:15 PM EDT

2014

ROBERT JR. & SUSAN DOWNEY

"Yo. Susan. Me. Baby. Girl. November. Scorpio?" quipped the Avengers star on Twitter to announce that he and his producer wife will welcome another child this fall. The couple are already parents to son Exton, 2½; Downey also has a son Indio, 20, from a previous marriage.