Actress Brittany Murphy died of cardiac arrest Sunday morning (December 20) in Los Angeles, California. She was 32. Murphy began her career in TV sitcoms before breaking out alongside Alicia Silverstone in the hit 1995 comedy "Clueless." She starred in such films as "Girl, Interrupted," "Drop Dead Gorgeous," "8 Mile," "Sin City," "Just Married," "Uptown Girls," "Don't Say a Word" and "Happy Feet." Murphy also voiced Luanne on all 13 seasons of the hit animated series "King of the Hill."