Better brunette? On the heels of her birthday trip to Cabo San Lucas, Mexico, Reese Witherspoon resurfaced in Nashville March 30 and unveiled a brand new, darker 'do. Wearing a striped sweater and a navy blue coat, the married mother of three carried her 6-month old son, Tennessee, through town.

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The famous blonde became a brunette for her role in the upcoming film The Good Lie, Us Weekly can confirm. In the movie, Jim Toth's wife plays a woman who develops a friendship with refugees during the Sudanese civil war.

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The last time Witherspoon went to the dark side, the Walk the Line star won the Academy Award for Best Actress in a Leading Role. "It's great to be brunette," she told reporters at the Venice Film Festival in 2004. "Nobody knows who I am. Everybody walks right past me. It's a nice reprieve from my normal self."

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Tell Us: Which hair color do you prefer on Reese Witherspoon -- blonde or brunette?

This article originally appeared on Reese Witherspoon Goes Brunette, Takes Son Tennessee to Nashville