Cristiano Ronaldo performs mannequin challenge - in just his white underwear

Cristiano Ronaldo isn't shy when it comes to showing off some flesh in front of the camera.

Earlier this year the internet went mad when Real Madrid uploaded a picture from their dressing room after their victory in El Clasico which featured Mr Ronaldo in just his pants.

And this week on international duty, Ronaldo took centre stage again as Portugal players recorded their very own mannequin challenge video.

While the majority of the Portugal squad and backroom staff are either on their mobile phones, checking messages and taking selfies or merely chatting to their near neighbour, Ronaldo stands solitary in the middle of the dressing room - in just his white pants.

We'd give a penny for Oliver Kahn's thoughts right now. The German legend said earlier this year: "Lately I've been seeing more of Cristiano Ronaldo's six-pack than my own wife's breasts."

Ronaldo is clearly a man comfortable in his own skin. The Real Madrid playmaker ripped his shirt off Hulk-style to show his ripped torso after scoring Real's fourth goal from the penalty spot in the 2014 Champions League final against Atletico Madrid.

Portugal's mannequin challenge video follows on from Andy Murray and Novak Djokovic's video ahead of the ATP World Tour Finals in London this week.

Murray is seen wielding a selfie stick with Djokovic joining the world No 1 to share a snap.