The baby boy that Robert Downey Jr and his wife were expecting has arrived. He is now a father for the second time, at 46 years old. Wife Susan had the little man yesterday morning, and he weighed 7lb5 and was 20 inches long. They are of course celebrities and so the baby’s name is not normal. It is Exton Elias Downey. A source said: “Everyone is healthy and they couldn't be happier.” Robert Downey Jr revealed to the world that they were having a boy during a TV interview. He even admitted at the time that he would get into trouble with his wife as she wanted to keep the sex a secret. She later said: “I could never really stay mad at him, but I can tell you it genuinely wasn't something we planned to reveal.” Oops! He was just too excited though, so we can see why she forgave him. Plus, he’s hot and has lots of money. That always helps. And he did manage to keep his mouth shut when asked about baby names. He said: “If I told you the name, then she would lop off my head with a machete.” Robert Downey Jr, star of Sherlock Holmes, already has a grown up son from his first marriage – 18 year old Indio. The two of them are regularly spotted doing boys things together in LA. This is in between Robert running around form city to city on various film shoots. He has hinted that it may all calm down now he has a new baby to think about. He said: “Life is good. With a new baby on the way, maybe I ought to think about slowing down a little. But I can't see that happening in the short term.”