Stefanie Powers (born Stefanie Zofya Paul; November 2, 1942) is an American actress best known for her role as Jennifer Hart in the American…Stefanie Powers (born Stefanie Zofya Paul; November 2, 1942) is an American actress best known for her role as Jennifer Hart in the American mystery series Hart to Hart, with Robert Wagner, which aired for five seasons from 1979 to 1984.[2] Powers and Wagner later reunited for eight Hart to Hart TV movies in the 1990s.[3] She is a two-time Emmy Award nominee and five-time Golden Globe Award nominee.[4]