09 October 2012A top plastic surgeon has claimed model and actress Christine Brinkley has undergone cosmetic procedures to achieve her youthful looks. The star is 58 years old but looks considerably younger and in 2005, was given a renewal of her original 25-year modelling contract with cosmetics brand CoverGirl, which was one of the longest modelling contracts ever.Speaking to RadarOnline.com, Dr Anthony Youn explained Brinkley looks almost as young as she did in the 80s, which suggests she has had plastic surgery. He stated: “Her skin is flawless, possibly due to a combination of laser treatments and chemical peels. Her forehead is impossibly smooth. Impossible without maybe a little Botox?” Dr Youn, who is a member of the American Society for Aesthetic Plastic Surgery, added that she may also have had surgery to lift her upper eyelids. Although there has been a great deal of speculation regarding the matter, Brinkley has never admitted to having plastic surgery and instead, puts her youthful looks down to exercise and her vegetarian diet.