Johnny Depp and Marilyn Manson rock out on stage at the 4th Annual Revolver Golden God Awards at Club Nokia; Robert Downey Jr., Scarlett Johansson and Chris Evans grace the red carpet for the premiere of The Avengers at the El Capitan Theatre; Nicole Scherzinger and Jessie J step out for the 3rd annual ELLE Women In Music Event at Avalon in Hollywood—Wednesday night in Los Angeles was filled with superheroes, rock gods and celebrities, and we've got the details on where they partied in this installment of Last Night's Parties! More»

Joel McHale, Victoria Justice and Giuliana Rancic step out for the L.A. Premiere of Bully at the Chinese 6 Theatres; Maria Menounos, Katherine Jenkins and the cast of "Dancing With The Stars" enjoy an after party at Mixology 101; Ariana Grande performs at a special concert for the DVD release of Alvin and the Chipmunks - Chipwrecked; Joel Kinnaman joins Mireille Enos on the red carpet for the season 2 premiere of AMC's "The Killing"—Monday night in L.A. was filled with red carpet events and we have the rundown of details and who was there in this installment of Last Night's Parties! More»

The 54th Annual Grammy Awards takes over the Staples Center; Paris Hilton and Afrojack attend EMI's Grammy after party; Tony Bennett and Diana Krall perform at Clive Davis and The Recording Academy's Pre-Grammy Gala; Ne-Yo and Compound Entertainment throw a Pre-Grammy midnight brunch; Kelly Clarkson and John Legend attend Sony Music Group's Grammy Reception at Cecconi's; Bruno Mars performs at Warner Music Group's Grammy Celebration hosted at Chateau; Jay-Z's Roc Nation holds a pre-Grammy brunch at Soho House; MusiCares honors Paul McCartney as person of the year and raises $6.5 million for artists; Cash Money Records holds their 3rd annual pre-Grammy Awards party with Lil Wayne and Drake; Flo-Rida and Pia Toscano rock the house at OK! Magazine's pre-Grammy event—Los Angeles was alive with music this weekend and we've got your inside scoop on all the festivities and the celebrities who attended them in this edition of Last Night's Parties! More»

From Betty White to Robert Pattinson, it was raining stars at the People's Choice Awards; Shenae Grimes and Stephanie Pratt attend the opening of a Swiss timepiece flagship on Melrose; Liam Neeson, Kristen Bell and fellow faces of the big screen hit the downtown premiere of The Grey; Michelle Williams, Bradley Cooper, Lindsay Lohan and more celebrate awards season with the Weinstein Co. and Audi at Chateau—we have your details on how red carpet season kicked into high gear this week in this installment of Last Night's Parties. More»

Anna Faris, Chris Evans, Emmy Rossum, and Dave Annable step out for the premiere of the new film that ponders the true love and sluttishness in What's My Number?; Hugh Hefner, Jane Fonda, and Carrie Underwood honor Smokey Robinson for his many achievements in music at the 2011 Ella Awards—Hollywood was still feeling the pain from Sunday night's Emmy festivities, but not everyone was too hungover to step out for some fun, so get all the details on Monday's party warriors in this edition of Last Night's Parties. More»

After the awards were given out and Ricky Gervais offended enough people during the Golden Globes ceremony, the real fun started. Celebrities, along with some 5,000 revelers, hit the Beverly Hills Hilton or space adjacent for one of seven parties.  We've got the details on who went where and what happened! More»

[Photo via] Another day, another video game launch and movie premiere in Hollywood. Last night's agenda held the launch of Ubisoft's 'Assassins Creed Brotherhood', where gamers owned the night and welcomed ladies aplenty, but turned away competition (would-be male guests) to increase their odds. Meanwhile, fabulously flamboyant dessert towers were upstaging divas who were busy taking creeptastic photos together at the Burlesque premiere after party a few blocks away. More»

[Perez Hilton flashes the pink carpet. Photos via Getty]

Celeb gossip blogger, Perez Hilton celebrated his 31st Birthday this Saturday at the legendary Viper Room on Sunset Blvd with the real Paris Hilton along with Christina Aguilera (surprise performer), the Jonas Brothers (who brought out his cake), and guests including Amanda Bynes, Ashley Tisdale, Aubrey O'Day, Brittany Snow, Brittney Gastineau, Christina Aguilera, (more story and photos below)... More»