Mary Therese Cadorette (born March 31, 1957) is an American actress best known for playing John Ritter's live-in girlfriend, flight attendant Vicky Bradford on the short-lived 1984 Three's Company spinoff, Three's a Crowd.Cadorette was born in East Hartford, Connecticut. She started taking dance classes when she was five years old and later entered dance competitions. She gives credit to her love of dance for her career milestones.