Last night in NYC, Robert De Niro, Dree Hemingway, Kiernan Shipka, Alexa Chung, and more stepped out for Chanel's 8th Annual Tribeca Film Festival Artists Dinner at The Odeon, Brooklyn Museum hosted its annual fundraising gala, the Brooklyn Artists Ball, celebrating Brooklyn’s creative community, Pierce Brosnan cozied up to "Love is All You Need" cast member Trine Dyrholm at the premiere after party, and so much more!

Last night in NYC, Karl Lagerfeld debuted his latest collaboration with Melissa Shoes in Soho, Cara Delevingne, Carine Roitfeld, and Karlie Kloss came out to celebrate the partnership with Karl at En Japanase Brasserie, Daniel Craig and Michael Strahan helped unveil the all-new Range Rover Sport at an exclusive VIP reception, and more!

Over the weekend, President Obama and Vice President Biden were sworn in for their second term and a whole lot of partying commemorated the occasion. Here's where celebrated the 57th Inauguration:

[More added 1/17--check the last slides] With bars open until 4am and politicos ready to party, there will be a lot going on to celebrate Obama's second Inauguration. Even if you missed out on the official ball tickets from the Presidential Inauguration Committee, there are still a lot of events you won't want to miss (in fact, most of the ones here will be better parties, period)! Balls come and go every 4 years, so pay attention to learn what's hot and what's not for 2013.

The Obamas and Bidens have been invited to basically all of the events listed here. They are only obligated to show up to the two official balls but just might pop in when you least expect them to...

Amy Adams, Kerry Washington, Leonardo DiCaprio, Bradley Cooper and more celebrate with the Weinstein Company; Anne Hathaway, Jessica Chastain, Hugh Jackman and other stars party wit NBC/Universal; Damian Lewis, Claire Danes, Zooey Deschanel and other TV actors get down at a post-show party hosted by FOX; Julianne Moore, Lena Dunham, Aaron Sorkin and dozens of other members of the HBO family hit the network's shindig—almost as important as which nominees won Golden Globes last night is where those stars chose to celebrate afterwards and we have the full rundown for you in this special Golden Globes After Party edition of Last Night's Parties.

[Brad Pitt, James Gandolfini] [Marion Cotillard, Hilda Queally] [Rose Byrne, Jennifer Carpenter via PMC]

Last night, Brad Pitt joined the rest of the cast from "Killing Them Softly" for the Cinema Society screening at the SVA Theatre and No.8 after party, sponsored by Men's Health & DeLeón Tequila. The film premiered to a star-studded crowd, including Harvey Weinstein and wife Georgina Chapman, Kanye West, Amy Adams, Marion Cotillard, Olivier Theyskens, Rose Byrne, and more. From notable man dates to major PDA couples, check out some things we learned at last night's screening.

[Darren LeGallo, Amy Adams] [Brad Pitt, Sam Taylor-Johnson, Aaron Taylor-Johnson] [Terry Richardson, Heidi Mount]

Last night in NYC, Brad Pitt and James Gandolfini stepped out for a screening of their new film "Killing Them Softly," Raekwon performed at the Gallery at Dream Downtown for The Cools' Cyber Monday celebration, David LaChapelle's new exhibition, "Still Life" opened at Paul Kasmin Gallery, and more!

Lindsay Lohan endorses Mitt Romney (yes, yes she did) at the launch of a new ginseng drink; Katy Perry sings for Kate Hudson, Sarah Jessica Parker, Chelsea Handler and more at the amfAR gala and helps it raise  $1.3 million in a single night; the GRAMMYs present a special tribute show to Whitney Houston with performances from Usher and Jennifer Hudson; Kyle Richards celebrates her Beverly Hills boutique's grand opening with Lisa Vanderpump and Whitney Port—laugh, cry and feel lots of emotions in between as we bring you the Thursday event rundown in this installment of Last Night's Parties.

David Duchovny, Emmy Rossum, Sophia Bush and many more hit The CW, CBS and Showtime's Summer TCA Tour Party; Claire Danes and Bryan Cranston step out for the 28th Annual Television Critics Association Awards in Beverly Hills; Maria Menounos and Derek Hough show off their fancy footwork at a charity gala; Nigel Lythgoe joins the British Consul at her home for a launch celebration of the London Olympics—get the rundown of the weekend's biggest events around L.A. in today's installment of Last Night's Parties. More»

Last night in NYC, Dennis Crowley came out to celebrate an evening of innovation and imagination at the American Museum of Natural History, Ashlee Simpson helped kick off the Samsung Galaxy S III celebrations with DJ Holy Ghost at Marquee, Ali Forney Center hosted their 3rd annual oasis at the Bowery Hotel, Jonn Hamm made a surprise appearance on stage at Williamsburg Park, and more! Last night's parties were out of this world. More»

Jay-Z, Kanye West, Beyonce and others win big at the 2012 BET Awards; music exec Kevin Liles throws a pre-BET Awards pool party with guests Trey Songz and and Estelle; Russell Brand, Sarah Silverman, Jerry Seinfeld and more raise funds for the David Lynch Foundation; Christina Milian, Meek Mill, Tyga and more celebrate the BET Awards with the Cash Money family; SRC Records honor Melanie Fiona with a pre-BET Awards party; BET CEO Debra Lee takes over Union Station for a pre-awards show bash with live music by Luke James and Q-Tip among others—L.A. was buzzing with industry events all over town this weekend and we have the details on it all in today's installment of Last Night's Parties. More»