Didi Conn (born Edith Bernstein on July 13, 1951) is an American film, stage and television actress. Conn was born in Brooklyn, New York, the daughter of a clinical psychologist.[1] "Didi" was her childhood nickname. She attended Midwood High School; her brother is opera singer Richard Bernstein. She has been married to composer David Shire since 1982, with whom she has a son, Daniel Shire, who has been diagnosed with autism. Conn is also stepmother to Matthew Shire, a Los Angeles screenwriter. Career Conn made her debut as an actress in the 1960s. Her notable roles since the 1970s, when she first became prominent, include: # "Laurie Robinson" in You Light Up My Life, 1977. # "Frenchy" in the feature films # Grease, 1978, starring John Travolta and Olivia Newton-John. # Grease 2, 1982, starring Maxwell Caulfield and Michelle Pfeiffer.