Suki Waterhouse rinses her hair with aerated drink

Bradley Cooper's ex-girlfriend Suki Waterhouse has revealed rinsing her hair with aerated drink Coca-Cola is the secret behind her illustrious locks.

The 23-year-old British supermodel said she relies on the sweet soda to give her hair a boost, reported Us magazine.

"I rinse my hair with Coca-Cola sometimes. I don't like my hair when it's washed - it's fine and limp - but Coca-Cola makes it tousled, like I've gone through the Amazon or something," she said.

Waterhouse split from Cooper after two years of dating.