She included a throwback video featuring their late father, Steve Irwin, and showing how Robert got his unique nickname.

Robert Irwin's got the world at his feet, right now ... and it only took him 22 trips around the sun to blossom into a big star.

The Dancing with the Stars winner celebrated his 22nd birthday on Monday, Dec. 1, as his family shared tributes and a few ...

Wildlife Warrior and Dancing with the Stars champion Robert Irwin is celebrating his 22nd birthday, sparking an outpouring of ...