Bikini-Clad Irina Shayk Wears Tin Foil Hat During Outing With Bradley Cooper -- See the Pic

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Now we know the secret to Irina Shayk's shiny brunette locks!

The 30-year-old model was snapped enjoying some sun in Italy with boyfriend Bradley Cooper on Sunday, and for once, her killer physique in a tiny black bikini wasn't the only thing that had heads turning. Shayk wore a tin-foil hat as she sunned herself next to Cooper, getting comfortable in a fluffy white robe. Cooper was dressed casually, sporting a gray track suit and flip flops.

It is unclear if Shayk was sealing in a deep conditioning hair treatment with the hat, or attempting to dye her hair using DIY methods.

PICS: Hollywood's Hottest Bikini Bods

The Image Direct

It appears to be all good between 41-year-old Cooper and Shayk, after some speculated the two had a fight last week while in the stands at Wimbledon. The American Sniper actor was seen speaking intensely to Shayk, who appeared to be dabbing tears out of her eyes, before crossing her arms and refusing to look at him.

The attractive couple has been dating for over a year.

WATCH: Bradley Cooper and Irina Shayk Are the Absolute Cutest Couple at Wimbledon

Watch Shayk appear to give Cooper the silent treatment in the video below:

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