Irina Shayk “Turquoise bikini” body with Cristiano Ronaldo in St. Tropez

She spends her time posing in her underwear while he shows off his skills on the football pitch.

But it seems that Cristiano Ronaldo and his girlfriend Irina Shayk aren't too famous to goof around together.

The couple were seen play fighting in the sea as they enjoyed a day at the beach in St Tropez.

Just peachy: Irina was seen heading into the sea and showed off her amazing derrieres

Irina Shayk “Orange bikini” with Cristiano Ronaldo’s son on St Tropez luxury yacht

She might not be his biological mother but there is little doubt that Irina Shayk has bonded with her boyfriend's son.

The 26-year-old model was seen carrying Cristiano Ronaldo Jr following a day aboard a yacht in St Tropez.

Irina was seen holding the little boy, who was born by surrogate last summer, close to her chest as they stepped out in the sunshine in France.

 Worked the natural look: Even with her hair in a messy bun and not wearing make-up Irina looked model stunning

Youtube! Irina Shayk’s "Exclusive" curves for German GQ

She's one of the hottest women in the world.

And if it wasn't proven before Irina Shayk has now set about showing off just how sizzling she can be.

The Russian model has posed for one of her most sultry photo shoots yet to grace the cover and inside pages of Germany's GQ magazine.

Scroll down for video...

Sizzling: Irina Shayk smoulders as she shows off her perfect body and curves for German GQ