Ginnifer Michelle Goodwin (born May 22, 1978) is an American actress. Goodwin first had roles in the popular NBC television programs
Law & Order and Ed before appearing in the Comedy Central television movie
Porn 'n Chicken. She later had substantial roles in the films
Mona Lisa Smile,
Win a Date with Tad Hamilton!, and
Walk the Line, in which she played Vivian Liberto, Johnny Cash's first wife. As of 2007, Goodwin is in a supporting role in her second season as Margene, the third wife in a polygamous family, on the HBO original series
Big Love. (Wiki)