Steven Tyler and Tommy Hilfiger hit up the Viper Room for an evening of music with The Click Clack Boom and a photography exhibit by Mia Tyler; Larry David and Jane Lynch join stars Sean Hayes, Chris Diamantopoulos and Will Sasso for the Los Angeles premiere of their new movie The Three Stooges; Moby, Danny Masterson and Giovanni Ribisi attend the opening reception for photographer Alex Prager's exhibition at M+B Gallery in West Hollywood—get the rundown on who partied where this weekend in Los Angeles in this installment of Last Night's Parties! More»

Last night in NYC, Friends performed at Le Baron for part four of the Encore! Live Sessions, Chloe Sevigny and Adam Brody attended the after party for Damsels in Distress at the Soho Grand Hotel, Roma took the stage for Avenue A Soundcheck's Monday Rock series, Martin Scorsese honored Catherine Deneuve at the 39th annual Chaplin Award Gala, and so much more. Last night's parties were all about the music! More»

Kristen Bell and Jane Seymour attend the Alzheimer's Association's "A Night At Sardi's" celebrity musical revue benefit dinner; Analeigh Tipton, Aubrye Plaza and Maggie Grace hit the premiere of Damsels In Distress; Lacoste celebrates the launch of their women's Spring/Summer 2012 collection with a Sunset Tower soiree and special guests Malin Akerman, Jesse Metcalfe and Jenna Elfman—it was another bustling, star-studded Wednesday night in L.A. and we've got all the details in this installment of Last Night's Parties! More»

Dita Von Teese, Jenna Elfman and more hit Luis Barajas and Emmy Rossum's Winter feast/cocktail party; Starz! rolls out the black carpet for the premiere of new original series "Spartacus Vengeance" in Hollywood; John Baldessari, Joel Silver, and Diane Keaton step of for the debut of Rodarte's newest collaboration with LACMA; Steve Aoki has a record release party; Mr. & Mrs. Smith throw a chichi launch party for their new travel guide book at Soho House; the Winklevi turn up at Connor Cruise's 17th bday bash at the Clippers game—it was just another Wednesday night L.A., let's discuss in this edition of Last Night's Parties. More»

Dennis Quaid and Aimee Teegarden step out for Beneath The Darkness; Emily Blunt kicks off a Palm Springs Film Festival; Emmy Rossum, William H. Macy, Kristen Bell, and more celebrate two Showtime original series premieres; Ewan McGregor, Channing Tatum hit the Haywire premiere and after party hosted by Playboy—Wednesday and Thursday night were all about the business we call show here in L.A. and we have all the details in this pre-weekend edition of Last Night's Parties. More»

Last night, Jessica Biel hosted the Sixth Annual Charity Ball, Elle Fanning and Scarlett Johansson partied for 'We Bought A Zoo,' Caitlin Moe and Mia Moretti performed at the Belle & Clive launch hosted by Chanel Iman, Ivanka Trump opened her fine jewelry boutique, and so much more! Last night's parties were all about the charities! More»

[Christina Aguilera, Mathew Rutler via] Sienna Miller gets honored for her humanitarian work; Christina Aguilera, David Arquette and some others step out for a very Bolthouse video game launch blowout; Malcolm McDowell, Bob Weinstein and more have a post-premiere celebration at The Little Door; Babs Streisand is honored at the Cedars-Sinai Board of Governors gala—there was quite a range of events last night, let's discuss in this edition of Last Night's Parties. More»

Chris Pine, Samantha Ronson, Nicky Hilton and more join hosts Olivia Wilde and Marvin Scott Jarrett at SKYBAR to celebrate NYLON's August Denim Issue; TV industry veterans light up the panels for the audience at Day 1 of the 2011 Television Critics Association Summer Press Tour; Travis Barker, Paul Wall, Louie Vito and more inaugurate Jeremy "Twitch" Stenberg into the Famous Stars & Straps family at a pre-X Games kickoff at The Roxy—it's been a slow week but things are picking up so get all the details from the Wednesday night in this edition of Last Night's Parties. More»