26 years after first working with Calvin Klein 44-year-old mother of two Christy Turlington is back and looking as amazing as ever. She took the Autumn Winter 2013 campaign from 29-year-old Lara Stone and, lovely as Lara is, it is easy to see why. Christy looks amazing in the shots from Mario Sorrenti and we want to know her secret. What do you think?

Christy 26 years ago (first picture) and now.