Twiggy has become a new face of the moisturiser Olay - almost 25 years after she first starred in a TV campaign for the brand.
The star, who is three months off her 60th birthday, fronted adverts for Olay back in 1985.
Twiggy, who has been modelling since the age of 16, said she was "delighted" to return to the beauty giant as the face of Olay Definity.
Sarah Clark, spokeswoman for Olay Definity, said: "We were thrilled to welcome Twiggy back to the brand.
"She is a true beauty icon who continues to be an inspiration to millions of women across the UK."
Proctar & Gamble, the company which own Olay, said signing Twiggy was, at least in part, a sign of the growing trend among fashion and beauty brands to use "age-appropriate" models to target consumers.