By Meghan Blalock
Updated Mar 01, 2013 @ 11:28 am
Rachel Weisz, Michelle Williams, Mila Kunis
Credit: Dave J Hogan/Getty Images

The bewitching trio of Oz The Great and Powerful continued their world tour last night 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), walked the yellow brick road alongside the "wizard" himself, James Franco. The film hits theaters in the U.S. March 8.

Plus, see more of this week's biggest parties!