Michelle Gilliam Phillips (born Holly Michelle Gilliam; June 4, 1944) is an American singer, songwriter, actress, and model. She rose to fame as a vocalist in the musical quartet the Mamas and the Papas in the mid-1960s. Her voice was described by Time magazine as the "purest soprano in pop music". She later established a successful career as an actress in film and television from the 1970s onwards.