Nicole Scherzinger believes water is the secret to her slim figure.

The pop star - who is in a relationship with Formula 1 racing driver Lewis Hamilton - makes sure she keeps her body and skin hydrated at all times by topping up her H2O levels.

She said: "I drink water to stay in shape, get lots of rest, use a good moisturiser and exercise. I go through phases of being a jogging fanatic and at other times I'm more chilled."

The 32-year-year-old singer is keen to keep her beauty in a natural way and is reluctant to ever have surgery.

However, the former Pussycat Doll accepts she may change her mind when she reaches old age.

She said "I haven't had any surgery, but I'd have some really long legs if I could. The most important thing is to take care of your body and your mental and spiritual state. But down the line who knows? When I'm 60 I might want Botox, but it looks scary, sometimes."