Various sources, such as ComingSoon.net and DarkHorizons are reporting that Sienna Guillory, a British model and actress, will play the character of Arya in the upcoming Eragon movie. Guillory has acted in movies such as The Time Machine, Helen of Troy, and Resident Evil: Apocalypse. You can learn more about Sienna Guillory in our cast section. Thanks to Kenneth Paolini for the tip!