Lauren Anne D'Ambruoso (born February 20, 1978), known professionally as Lauren Ambrose, is an American actress and singer. She is known for her work in television, film, and on Broadway. Ambrose is best known for her television roles as Claire Fisher in Six Feet Under (2001–2005), for which she was nominated for two Primetime Emmy Awards and won two Screen Actors Guild Awards, and as Jilly Kitzinger in Torchwood: Miracle Day (2011). Her film credits include Can't Hardly Wait (1998), Psycho Beach Party (2000), Sleepwalk with Me (2012), and Where the Wild Things Are (2009). She is the lead singer of the ragtime band Lauren Ambrose and the Leisure Class.Ambrose portrayed the lead role of Eliza Doolittle in the Lincoln Center Theater revival of My Fair Lady on Broadway, for which she was nominated for the 2018 Tony Award for Best Actress in a Musical and won the 2018 Outer Critics Circle Award for Outstanding Actress in a Musical. In 2019, Ambrose began starring as Dorothy Turner in the Apple TV+ psychological horror series Servant.