Singer/actress great EARTHA KITT has given her seal of approval to R&B beauty BEYONCE KNOWLES to star in a biography on her life. The original CATWOMAN star, 79, has written about her seven decades in showbusiness in her memoirs I’M STILL HERE and REJUVENATE: IT’S NEVER TOO LATE. The SANTA BABY hitmaker is thrilled to hear that Beyonce is lined-up for the movie, and she believes it is high time her exciting life hit the screen. She tells website, “My life has been so damned interesting.”