Marlo Thomas is 85 years and 10 month(s) old. She was born in 21 Nov, 1937. Marlo Thomas is an American social activist, producer, and actress best known for her role as Ann Marie on the sitcom, "That Girl". She was born in 1937 to a Lebanese father and Italian mother, and grew up in California. She attended Marymount High School and USC, and was in a long relationship with playwright Herb Gardner. She married Phil Donahue in 1980, and had a successful career in television, winning four Emmys, a Golden Globe Award, and a George Foster Peabody Award. She was inducted into the Broadcasting and Cable Hall of Fame.