As celebrities like Natalie Portman and Miley Cyrus lighten up, Brooklyn Decker and Dakota Fanning are set on doing the exact opposite.

Both formerly blonde actresses have recently experimented with the dark (hair-dyeing) arts, debuting new brunette hairdos this week; Decker, 25, showed hers off at Michael Kors' Golden Heart Gala in NYC Oct. 15, while NYU student Fanning shared a pic of her hair makeover on Twitter.

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"Look who turned into a brunette!" the 18-year-old wrote.

As for Decker's decision to go darker?

"It hasn't been brown in a long time," the Battleship star explained to InStyle. "I was really bored and just decided to go brown."

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Tell Us: Whose brunette hue do you like better?

This article originally appeared on Brooklyn Decker vs. Dakota Fanning: Who Looks Better as a Brunette?