Sport quirkies /Instagram

Fat Ronaldo proves on Instagram that he's shed the flab

Former Brazil striker Ronaldo - or Fat Ronaldo to give him his full name - has shown off his new slimline physique on Instagram.

Two months ago the two-time World Cup-winner lost 37 pounds on a Brazilian reality TV show, to help him be able to play in a charity match with Zinedine Zidane.

The match came four months after the ballooning striker hung up his boots due to injuries, and a thyroid problem which he claimed was the cause of his weight problem.

Many thought he'd pile the pounds back on, but he took to the photo sharing site to prove the doubters wrong.