We feel like we’ve known him since he was in nappies. But now, at 21, the fame enjoyed by Robert Irwin - the son of Crocodile Hunter Steve Irwin - has been supercharged after winning one of America’s top reality television shows, Dancing with the Stars. Today, culture editor-at-large Michael Idato on the Irwin family empire and how Robert Irwin’s brand of "nice" has won over America.Subscribe to The Age & SMH: https://subscribe.smh.com.au/See omnystudio.com/listener for privacy information.