By Kelly Holechek
Updated Oct 10, 2012 @ 11:51 am
Olivia Wilde Hair
Credit: Getty Images (2)

Olivia Wilde has gone to the dark side! The Revlon brand ambassador kissed her sun-kissed ombré hair goodbye in favor of a more fall-friendly rich chocolate hue. This is just the latest experimental color for the Butter star, who changed her hair all year long. In January, she chopped her strands into a shoulder-grazing bob, then dyed her locks honey-blond for a movie role before working an ombré style as of late. Tell us: Do you like her new color?

Plus, see more celebrity hair makeovers!