Diane Keaton – The Godfather series, born in 1946

Having been diagnosed with basal skin carcinoma at age 21, Diane Keaton cannot step out of the house without wearing sunscreen and a hat. The sun’s harsh rays can really do you harm in more ways than one. Just like some of the stars on this list, she would rather age naturally. Her reason? Her hands might not match her face and the hands tell the real age of a woman. To fight the outward signs of aging, she simply exercises. She has expressed in an interview about her love for her treadmill.