This will be the couple’s second child, but first daughter, together. The superstar turned to Twitter first to announce the news, albeit in a very cryptic way.
If that wasn’t clear enough, the Avengers star also posted the announcement on Facebook – this time, making it clearer.
Robert and Susan already have a son, Exton Elias, together.
The announcement must be a warm welcome these days, since Indio, who is from a previous marriage, recently entered rehab for cocaine – a problem that hits close to home since Downey suffered from drug and alcohol addiction.