Model Christie Brinkley poses inside the Cambridge Theater before her final Chicago performance in London on August 27, 2011. The 57-year-old mother-of-three still turns heads on the red carpet, thanks in part to her spf-rich, all-natural, vegan skin care regimen. Brinkley's dished her anti-aging secrets by launching her own skincare line, called Christie Brinkley Skin Care. Want to see more of the supermodel stunner's stay-fit secrets? Check out this SHAPE exclusive !