'Mack & Rita' star Diane Keaton is 'luckiest woman' to be acting still - USA TODAY

In “Mack & Rita,” Diane Keaton plays a 30-year-old trapped inside a 70-year-old's body. The Oscar winner talks aging in Hollywood and her new comedy.

For more than 50 years, Diane Keaton has entertained audiences on screens big and small. She has picked up an Oscar along the way (“Annie Hall”) and three more nominations for best actress, but she w… [+3851 chars]

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