Lucie Désirée Arnaz (born July 17, 1951) is an American actress. She is the daughter of actors Lucille Ball and Desi Arnaz, and is the sister of actor Desi Arnaz, Jr. When asked why her name is not spelled like her famous mother's, Lucie replied: "My Dad chose the name. My mother wanted to name me Susan (don't ask why) but, as soon as she nodded off after delivery, he wrote L-U-C-I-E on the birth certificate. He said it was to honor my mother and he spelled it differently so that NO ONE would ever get confused."