Amazing Grace!

She plays an oversexed, bleached-blonde woman in love with a killer in The Paperboy, but Nicole Kidman is pulling yet another 180 in her latest flick -- playing the late Princess Grace (a.k.a. Grace Kelly) of Monaco in a biopic of the late royal and former film star.

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The 45-year-old Oscar winner was photographed in costume for the first time on Tuesday, shooting in Menton, France -- wearing a pale yellow coat, pearls, and a retro, ladylike hairdo for Grace of Monaco, set in the early 1960s.

Directed by Olivier Dahn, Grace of Monaco costars Tim Roth as Prince Rainier III, and is set for a 2014 release, and specifically centers on the former Hollywood star's involvement with Monaco's dispute with France's Charles de Gaulle over tax laws.

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In real life, Kidman has had powerful men at her side too: First husband Tom Cruise, and Keith Urban, her spouse since 2006.

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The actress and mother of four told Harper's Bazaar she prefers "a bigger, stronger personality; that's what I've been drawn to. I need protection. Everyone wants to feel someone's got their back."

This article originally appeared on PIC: See Nicole Kidman as Grace Kelly!