British beauty Naomi Campbell denies ever undergoing cosmetic surgery, insisting sobriety, exercise and her Ethiopian heritage are behind her supermodel looks.

The 35-year-old hates hearing rumours about how she maintains her iconic face and figure, and insists her natural approach to life helps her look good.

She says, "I just take care of my body. I don't drink alcohol and I work out for two hours a day.

"I don't see myself as gorgeous and I'm fed up with people saying I've had plastic surgery and lipo. I don't need it because black don't crack.

"My grandmother has fantastic genes and only has about one wrinkle."