WITH Lisa Curry and Grant Kenny as parents, it shouldn't come as a surprise that Jett Kenny has the ripped body of an athlete.

The 21-year-old showed off his rippling physique while competing in an Ironman heat at the Ocean6 Series on the Gold Coast at the weekend. And photos of the tanned sportsman and up-and-coming model will make your jaw hit the floor.

Snapped walking down the beach in his speedos after competing, Kenny flaunted his toned bod and taut abs.

Jett - the youngest of three kids from Curry and Kenny's 23-year marriage - was signed to a Sydney modelling agency in 2016 after his mum sent photos to Vivien's Models.

"It was sort of mum's idea, as it usually is," he told The Courier Mail about his sudden modelling career.

"She just sent in some photos and then got an email back and went from there. I just go with what's going on, and I was just like, 'Why not?'."

While he initially said he was "too laid back" to do runway shows, he's since walked the catwalk in his speedos for brands like Budgy Smuggler.