Jessica Alba, Drew Barrymore, Katy Perry and other celebs clad in red, white and blue attend the opening of the Tommy Hilfiger West Coast Flagship; Hollywood darlings Michelle Williams and Mila Kunis walk the yellow brick road with James Franco and Zach Braff at the premiere of Oz The Great And Powerful; Kate Bosworth, Kim Kardashian, Jennifer Lopez, Lionel Richie and a slew of fashionable guests hit the opening party for Topshop Topman at Cecconi's; Eva Longoria, Naomi Watts and Minnie Driver, along with hotel aficionados from Conde Nast Traveler celebrate The Leading Hotels of the World 85th Anniversary—get the details on Wednesday's top L.A. events in this installment of Last Night's Parties.