Robert Downey Jr. and his wife, Susan, are set to welcome a baby girl this fall.

The “Iron Man” actor, 49, broke the news on Twitter saying, “Yo. Susan. Me. Baby. Girl. November. Scorpio?”

It’s since been retweeted over 12,000 times and it’s been favorited some 22,000 times.

He also took to Facebook to share the news with his followers there. “Um. I don’t know if it’s a ‘man’s world,’ but I’m certain women run it,” he wrote to his 19 million followers.

Robert and Susan, 40, are already the proud parents of 2-year-old Exton Elias.

Robert has another son from a previous relationship, 20-year-old Indio Falconer Downey, who was recently booked on cocaine possession charges.