Sixties icon Twiggy has signed to become the new face of Olay - almost 25 years after she first starred in an original TV ad campaign for the brand. br br Twiggy, dubbed the world's first supermodel, fronted ads for Olay back in 1985 before going on to concentrate on her own television career. br br Now three months before her 60th birthday, she has agreed to return to the beauty giant to front the brand's print ad campaign. br br Twiggy said: "I am delighted to be fronting the new advertising campaign because as a women who is nearly 60, I am a strong believer in using trusted brands like Olay, that are clinically proven to meet the needs of more mature skin.