Kristen Stewart is an actress.
Kristen Jaymes Stewart ( born ) is an American actress and model . She went on to star in Speak ( 2004 ) , Catch That Kid ( 2004 ) , Zathura ( 2005 ) , and Into The Wild ( 2007 ) , for which she was nominated for a Screen Actors Guild Award . She won the BAFTA Rising Star Award in 2010 and was awarded the Milan International Film Festival Award for Best Actress in 2011 for Welcome to the Rileys ( 2010 ) . In 2015 , she received critical acclaim for her role opposite Juliette Binoche in Clouds of Sils Maria , for which she won a multitude of accolades , including the César Award for Best Supporting Actress , making her the first American actress to win a César Award .