― Many people wonder how Diane Keaton looks so great at her age. Did she have plastic surgery or is she 100% natural? ∙ Diane Keaton, 66, told the April issue of "AARP: The Magazine" in 2012: "My thinking about plastic surgery is this: I haven't had it, but never say never. Because when you do, you are definitely going to go there. I said I would never have intercourse before I was married, and I did. I said I would never go to a psychiatrist, and I spent much of my life in [...].