Hayden Panetierre has acted.
Hayden Panettiere . She is known for her roles as cheerleader Claire Bennet on the NBC sci-fi series Heroes ( 2006 -- 10 ) , Juliette Barnes in the ABC/CMT musical-drama series Nashville ( 2012 -- present ) and Kairi in the video game series Kingdom Hearts . Other notable roles include her portrayal of the title character in the true crime drama Amanda Knox : Murder on Trial in Italy and Kirby Reed in the slasher film Scream 4 .