PHOTOS: Cristiano Ronaldo strips to his boxers for sexy photoshoot

There is not one part of Cristiano Ronaldo left to the imagination now...

The footballer may have been doing his best 'Blue Steel' straight-faced pose when he stripped down to his boxers for a photoshoot, but another part of him appeared to give away exactly how excited he was to be in front of the camera.

The hunky sportsman got his ... erm, abs ... out as he took part in a rather graphic photoshoot to promote his new underwear collection.

The racy snaps, which certainly draw the eye to particular areas, are practically XXX-rated!

The muscly brunette star models his new Spring/Summer 18 CR7 Underwear collection in a series of snaps sure to set pulses racing.

In one picture, the nearly-naked hunk sits perched on the edge of an office chair.

Practically every inch of him is on display as flexes his muscles and grabs hold of the arm of the chair as his other arms rests on his leg.

The dad-of-four's hair is brushed over to one side in a neat style and he rocks a clean-shaven look as he throws the camera a sultry gaze.

Another snap shows him perched on a cubed stool with a bonus Ronaldo shown in the reflection of a window - giving fans twice the joy.

Ronaldo models a pair of white boxers, emblazoned with his name, as he and his package stand at a window, again utilising the power of reflection to provide double the fun.

And in other snaps, he shows off his barefoot footballing skills and lies back on a leather chaise longue.

Ronaldo said of the campaign: "Underwear is the foundation to any outfit, so it’s important to wear quality, premium styles that make you both look and feel good. My CR7 Underwear Luxury Lifestyle campaign showcases the collection in a more intimate way than ever before. Since underwear is so personal, I wanted to bring a more personal element to the campaign, which shows me relaxing at home. Downtime in itself is a luxury!"