Natalie Portman Goes Back to Full-On Brunette—See the Pic!

Actress goes back to her roots--literally

One whirlwind press tour, two major hair changes!

While promoting her Marvel movie sequel Thor: The Dark World, Natalie Portman has undergone a complete tress transformation.

First, she took a few inches off her locks, which resulted in a shoulder-length ombré bob. Then just two weeks later, the star ditched her lightened ends and went back to her signature rich chocolate brunette hue.

Already feeling playful with her new look, the star stopped by Good Morning America today with retro waves. The perky curls complemented her cheerful pink coat, which she wore while greeting fans outside the New York City-based broadcast.

We've been enjoying Natalie's hair changes—and Dior ensembles—so much, we're almost sad that Thor hits theaters this Friday. Almost.