<Ul> <Li> John Travolta as Anthony "Tony" Manero </Li> <Li> Karen Lynn Gorney as Stephanie Mangano </Li> <Li> Barry Miller as Bobby C . </Li> <Li> Joseph Cali as Joey </Li> <Li> Paul Pape as Double J . </Li> <Li> Donna Pescow as Annette </Li> <Li> Bruce Ornstein as Gus </Li> <Li> Val Bisoglio as Frank Manero, Sr . </Li> <Li> Julie Bovasso as Flo Manero </Li> <Li> Martin Shakar as Frank Manero, Jr . </Li> <Li> Lisa Peluso as Linda Manero </Li> <Li> Nina Hansen as Grandmother </Li> <Li> Sam Coppola as Dan Fusco </Li> <Li> Denny Dillon as Doreen </Li> <Li> Robert Weil as Becker </Li> <Li> Fran Drescher as Connie </Li> <Li> Monti Rock as the DJ </Li> <Li> Robert Costanzo as paint store customer </Li> <Li> Ann Travolta as pizza girl (Travolta's sister) </Li> <Li> Helen Travolta as paint store customer (Travolta's mother) </Li> </Ul> <Li> John Travolta as Anthony "Tony" Manero </Li> <Li> Karen Lynn Gorney as Stephanie Mangano </Li> <Li> Barry Miller as Bobby C . </Li>

Who played tony's sister in saturday night fever