Side-boob siren Irina Shayk looks top draw at Champions League bash in Monte Carlo, Monaco

The Russian model turned heads at the event in Monaco after opting to attend in a white blazer and no bra.

She was accompanied by her footie ace fella Cristiano Ronaldo, who'll be representing his club Real Madrid in this season's competition.

At one point, Irina appeared to be instructing the oily-haired winger to be quiet as she pushed a forefinger to her lips.

Another snap sees Irina listening intently as Cristiano – dressed smartly in a suit – attempts to explain the draw process to his catwalk siren.

Giggles ... Irina Shayk and Cristiano Ronaldo

But it was far from a serious affair as the couple displayed their playful side, laughing during the function.

The couple have dating since early 2010 after meeting through their Armani ad campaigns.

Things are looking up ... Cristiano Ronaldo and Irina Shayk

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