“It’s been tough. I was fatter than I thought. Ha. But I’m getting there. Slowly.
“I want to thank @osher_gunsberg for the inspiration. And @emiliebrabonhames and @chiefbrabon for making me bleed.
“Its been really positive. For anyone out there I truly believe it’s never too late,” the star added.
Karl’s trainer Chief Brabon is no stranger to transforming celebrity bodies.
Last year, singing superstar Guy Sebastian unveiled the result of his eight-week training programme with the fitness guru to the stars in Men’s Health.
“I was in an unhealthy cycle,” Guy told the publication
“I was drinking too much. I wasn’t eating well. And everything I thought I was doing right wasn’t working.”
His resulting six pack made him a cover star – and we can’t wait to see if Karl will follow in his footsteps.