The son of the late Crocodile Hunter, who stripped to his skivvies for a new Bonds underwear campaign, says his dad would have a laugh at the 'Made for Down Under ads.

Irwin, the 21-year-old son of late "Crocodile Hunter” Steve Irwin, is the star of a new photo campaign for the Australian underwear company Bonds.

Robert Irwin entered the world of fashion as a 21-year-old when he appeared in the Bonds underwear advertising campaign. As a TV presenter, wildlife expert, and conservationist, Robert employs his current project as a way by which his background in nature conservancy is tied to modern-day fashion.

As the son of the late Crocodile Hunter Steve Irwin, Robert has carried on his father's legacy for years alongside his mother, Terri Irwin, and his sister, Bindi, at Australia Zoo. And I seriously mean he's carried the legacy for years.

Robert Irwin stepped out of his comfort zone in order to promote animal conservation. The 21-year-old zookeeper posed shirtless for a Bonds underwear ad.

Robert Irwin is giving a peek at what's down under. The son of late Crocodile Hunter Steve Irwin leaves very little to the imagination in racy new ads for Bonds, the Australian underwear brand that's launching in the U.