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Rachel Weisz, Michelle Williams and Mila Kunis

The powerful women of Oz The Great and Powerful continued their world tour in London, premiering the film at the Empire Theatre on Leicester Square in the heart of the city's theater district. InStyle's March cover girls Rachel Weisz (in Michael Kors), Michelle Williams (in Burberry Prorsum), and Mila Kunis (in Alexander McQueen and an Alexandra Mor ring) walked the yellow brick road and met up with the "wizard" himself, James Franco. The film hits theaters in the U.S. March 8.

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