Mary J. Blige, Warren Beatty, Brett Ratner, Kristen Bell and more celebrate 100 years of The Beverly Hills Hotel; Emily Deschanel and Kevin Nealon step out for animal rights; Maria Menounos has a birthday blowout at her home; Elizabeth Banks, Michelle Pfeiffer and Chris Pine hit the 2012 L.A. Film Festival for the premiere of their new movie—get your weekend event roundup in this edition of Last Night's Parties. More»

[Justin Timberlake, Amanda Seyfried photo via] Amanda Seyfried, Justin Timberlake and Olivia Wilde hit the In Time premiere; Kate Bosworth, Anna Wintour and more join Lisa Love and Frederic Fekkai at Chateau for a fashion show and tea at Chateau; David Arquette and Karina Smirnoff step out to support burn victims; Rosanna Arquette and Liz Goldwyn get a first look at Bryan Ferry's one-man exhibition; horror movie stars and fans party with some bowling; Adrian Grenier celebrates the art of sustainability and environmental consciousness—get your final dose of party hopping details before the weekend in this edition of Last Night's Parties. More»

[Carson Kressley, Julianne Hough via] Music fans celebrate the legacy of Johnny Ramone with a graveyard punk rock show in Hollywood;  Hugh Jackman and Evangeline Lilly walk the red carpet for the premiere of their new movie Real Steel; The Black Keys give a show at Ron Burkle's house for Tony Hawk's Stand Up For Skateparks Benefit; 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»