Brittany Murphy-Monjack (born Brittany Anne Bertolotti; November 10, 1977 – December 20, 2009) was an American actress and singer. She appeared in many movies and was the voice of Luanne on the American television show "King of the Hill". Murphy was married to British moviemaker Simon Monjack (1970-2010) from 2007 until her death on December 20, 2009. She died of pneumonia. An overdose of legal drugs also played a part in her death.