Academy Award winner of the 1980 Best Supporting Actress for the movie Ragtime. She also played Cora, Countess of Grantham, in the popular series Downton Abbey.
She was still in college when she took the role in her debut film Ordinary People.
Alongside movies and theater, she wrote songs for the band Sadie and the Hotheads.
She played the girlfriend of Timothy Hutton in the 1980 movie Ordinary People.