Undies to ballroom: Robert Irwin joins Dancing with the Stars USA

Fresh from breaking the internet with THAT Bonds commercial, TV host and conservationist Robert Irwin has again shown off his ripped physique while announcing he is heading to US TV.

Fresh from breaking the internet by posing with a snake in his undies, Robert Irwin is heading to the ballroom.

The 21-year-old wildlife expert has officially been revealed as the first celebrity contestant for the upcoming season of Dancing with the Stars USA.

Irwin is following in the footsteps of his sister, Bindi Irwin, who claimed the Mirrorball Trophy in 2015 alongside Derek Hough.

A behind the scenes image of Robert Irwin promoting Bonds underwear in the US. Picture: Supplied

Robert, son of the late Steve Irwin, recently made headlines for his bold campaign with Aussie underwear brand Bonds.

Speaking about his latest adventure, Irwin said he was “at a point in my life where I want to do as many different, exciting, and random things as possible”.

The industry's biggest reality fans and stars alike gathered at Hulu's Get Real House in Los Angeles to celebrate the hottest unscripted shows on streaming, from "Vanderpump Villa" and "The Secret Lives of Mormon Wives" to "Dancing with the Stars" and "Bachelor in Paradise." Robert Irwin with Rylee Arnold and Ezra Sosa. Picture: Getty Images

“If it makes me a little nervous or gives me an adrenaline rush,” he said.

“That’s exactly where I want to be.”

Robert Irwin on the set of I’m A Celebrity Get Me Out of Here. Picture: Channel 10

Friends and family were quick to support Irwin on the Dancing With The Stars Instagram announcement.

“CRIKEY! Cannot wait!!! Beyond proud of you,” his sister Bindi wrote.

“This is the best day of my life,” a user commented.

Bindi Irwin and Derek Hough in the 2015 Dancing With The Stars USA season finale. Picture: Getty Images

“If Rylee is his partner they will soar,” another wrote, referring to fan favourite dancer Rylee Arnold.

Arnold was paired with Olympic gymnast Stephen Nedoroscik last season, finishing in fourth place.

Robert Irwin is making a habit of the shirtless look. Picture: Getty Images

The announcement comes on the heels of Dancing with the Stars’s most successful season in years, with Irwin expected to hit the ballroom in September.

Originally published as Undies to ballroom: Robert Irwin joins Dancing with the Stars USA