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.

Lydia Hearst Paris Hilton Michelle Trachtenberg Leven Rambin Daniel Benedict Katy Perry Kristin Davis Tommy Hilfiger Emma Roberts Arnold Schwarzenegger Julianne Hough Ed Westwick Will.I.Am Michelle Williams Kate Bosworth Alicia Keys Jessica Alba Cash Warren Drew Barrymore Kim Kardashian Zach Braff James Franco Rachel Weisz Maria Menounos Eva Longoria Estelle Naomi Watts Ashley Madekwe Dee Hilfiger Ryan Seacrest Mila Kunis Kevin Zegers Katie Lee Randy Jackson minnie driver Derek Hough Kris Jenner Taylor Bagley Steven Cojocaru Olivia Munn El Capitan Theatre George Kotsiopoulos Miranda Cosgrove Harry Shum Jr. Lionel Richie Christina Milian Cecconi's Mary Elizabeth Winstead Abigail Spencer Darren Criss Giada De Laurentiis Jacquelyn Jablonski Kevin McHale Ellie Goulding Tao Okamoto Dakota Johnson Jenna Elfman Alice Evans Mr. C Beverly Hills Christa B. Allen River Viiperi Evan Peters Elon Musk Hal Sparks Melissa Smith Janel Parrish Talulah Riley Philip Green Tommy Hilfiger West Hollywood Tommy Hilfiger West Coast Flagship Grand Opening Event Bernard Fouquet Arthur Kulkocv Max Rogers "OZ The Great And Powerful" Los Angeles Premiere Topshop Topman LA Opening Party At Cecconi's Kelly Osborn Budweiser Black Crown Launch Party Conde Nast Traveler Celebrates The Leading Hotels Of The World 85th Anniversary Lance Williams Lisa Weier Claudia Kozma Kaplan Todd Thompson