Elle Macpherson reveals the secret of her good looking at 51

She recently turned 51 but Elle Macpherson's good looks, toned body and age-defying skin would have you believe otherwise.

So what's her secret? The model has revealed that she carries around a pH balance urine tester kit wherever she goes to check the state of her body. In an interview with the Evening Standard, the model admitted that the most surprising thing in her handbag is the tester kit, which she uses to check her state of alkaline.