Carmen Dell'Orefice. The 80 year old supermodel has consistently worked for 67 years! Muse to Salvador Dali at age 13, cover of Vogue magazine at 15 in 1947, and more in-demand than ever today. Carmen stopped dyeing her hair in her mid-40s saying, "I'm not giving in to anyone else's idea of how I ought to feel and look." She embraced the natural stages of graying and now has her hair toned 4 times a year to lift the color to a pure white.