Celebrity Hair Affair: Emily Blunt

Emily Blunt stars opposite Matt Damon in The Adjustment Bureau.

Along those lines, the British actress has adjusted her hair color for a different movie role. John Krasinski's prettier half has dyed her hair a shade of blonde for a role in Looper, an action film that will also star Bruce Willis and Joseph Gordon-Levitt.

Compare the new look with the old and vote now: