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.

Deborah Cox, Constantine Maroulis, Jay Manuel and more attend opening night of Jekyll and Hyde at the Pantages; Dustin Hoffman, Kathy Griffin, and Jane Seymour attend the 12th Annual Movies for Grownups; Demi Lovato and Ashley Madekwe step out for the opening preview of the new Topshop and Topman stores at The Grove; Hilary Duff and Mike Comrie celebrate the 25th Anniversary of the PGA Tour Wives Association—get the lowdown on L.A.'s top Monday and Tuesday events in this edition of Last Night's Parties.

Rihanna, Big Boi and Ne-Yo step out for the Island Def Jam Grammy after party; Akon, Kelly Rowland, Gotye, Afrojack, Brandon Boyd and more celebrate with Republic Records; Swizz Beatz, Alicia Keys, John Legend, Rick Ross and more make it out for House of Hype Monster's Grammy after party; Neil Patrick Harris and Bonnie McKee party with Billboard on the roof of The London; Alessandra Ambrosio, Ashley Benson, Sting and others celebrate with Warner Music Group at Chateau Marmont; Red Light Management takes over Skybar for a post Grammy soiree with Natasha Bedingfield among others— get the lowdown on who was out celebrating at L.A.'s top post-Grammy events in this edition of Last Night's Parties!

Justin Timberlake, Jessica Biel, Timbaland and Amy Adams attend Darren Le Gallo's art opening; Flo Rida and Kendra Wilkinson debate on who wore it better at OK! Magazine's pre-Grammy party; John Legend and Christina Milian hang with the Mayor at a music industry reception; L.A. Reid, Jeffery Katzenberg and Ciara party at Beacher's Madhouse with Epic Records; Gary Oldman, Harrison Ford and Billy Bob Thornton celebrate the opening of the Morrison Hotel Gallery by forming the ultimate boy band—okay, so they didn't form a boy band, but it's fun to pretend while getting the rundown on Thursday's top events in this installment of Last Night's Parties.

Emmy Rossum, Alden Ehrenreich, Alice Englert and more step out for the Hollywood premiere of Beautiful Creatures; the Producers and Engineers Wing host a jazz-filled Grammy Week celebration honoring Quincy Jones and Al Schmitt; Samantha Mumba, Greg Louganis and others attend the Whole Planet Foundation's Pre-Grammy Benefit concert—get the rundown on L.A.'s top Wednesday events in this installment of Last Night's Parties.

Josh Duhamel and Julianne Hough walk the red carpet at the Safe Haven premiere; Paul Scheer, Natasha Leggero and others get a little wacky at Season 2 premiere of "Burning Love"; Naomi Watts helps honor Ang Lee at the Visual Effects Society Awards; George Lucas gives Steven Spielberg bunny ears at the Dedication of the Sumner M. Redstone Production Building; Jordin Sparks brunches with the producers of the Grammys; the cast of "The Walking Dead" spends an evening with the Television Academy—get these highlights and more from Tuesday's top events in this edition of Last Night's Parties.

Jennifer Lawrence, Naomi Watts, Steven Spielberg, and others celebrate the Academy Award nominees with The Hollywood Reporter at Spago; Bradley Cooper, Anne Hathaway, Robert De Niro and a bevy of other A-listers enjoy a luncheon honoring the Academy Award nominees; Jason Bateman and Melissa McCarthy attend the premiere for their new movie Identity Thief; The Misshapes spin the RVCA Swimwear Launch Party—get the lowdown on L.A.'s top Monday events in this edition of Last Night's Parties.

Alan Tudyk, Seth Green and others honor the best in animation at the Annie Awards; Anne Hathaway, Ben Affleck, Lena Dunham, Steven Spielberg and more attend the Directors Guild of America Awards; Kerry Washington, Samuel L. Jackson and Halle Berry among many more hit the NAACP Image Awards; Jessica Alba and Hugh Jackman walk the red carpet at the premiere of Escape From Planet Earth; Jane Seymour attends the Art Directors Guild Awards; David O. Russell helps honor Jennifer Lawrence at the Santa Barbara International Film Festival—get caught up on the weekend's top events in this installment of Last Night's Parties.

Christina Applegate attends the premiere event for Kumpania: Flamenco Los Angeles at El Cid; Stevie Nicks, Dave Grohl, Joan Jett and other rock legends play an all-star concert in honor of the Sound City premiere; Bruce Willis and daughter Rumer Willis step out for a mural unveiling to commemorate 25 years of Die Hard; Dr. Dre, Kevin Connolly, Rosanna Arquette and many more hit the RivaBella Ristorante grand opening; Joaquin Phoenix and Paul Thomas Anderson help honor Amy Adams at the Santa Barbara International Film Festival—get your final rundown of the week on who was out on the town Thursday night in this installment of Last Night's Parties.

Courteney Cox and Ashley Benson attend a lavish Forevermark cocktail party at Chateau Marmont; Skid Row's Sebastian Bach rocks Revolver's Golden Gods Awards press show; Quentin Tarantino and Ryan Phillippe hit events at the Santa Barbara International Film Festival; "True Blood's" Bill Compton and Sookie Stackhouse prove they're fans of The Who at STAPLES—see who was out playing at the top destinations of Wednesday night in this edition of Last Night's Parties.

Selena Gomez, Ashley Tisdale, Ashley Benson, Jaime King and others celebrate NYLON's February issue with Coach at Soho House; John Malkovich, Teresa Palmer, Nicholas Hoult, and Analeigh Tipton attend the premiere and after party for their new movie Warm Bodies; emerging actors and actresses including Elle Fanning, Eddie Redmayne step out for the Santa Barbara Virtuosos Awards—get the lowdown on L.A.'s top Tuesday events in this edition of Last Night's Parties.