Berenice Bejo Hair
Credit: PacificCoastNews; WireImage

Berenice Bejo has returned to her brunet roots! The actress, who went auburn in January, debuted a deep chestnut hue last night at the Cannes Film Festival opening ceremony. Bejo is serving as the host of the event this year, where she will open and close the festivities. What do you think of her new look? Tell us in the comments!

Plus, see more celebrity hair makeovers in the gallery.