Over the weekend, Kristen Wiig, Tina Fey, Jimmy Fallon had a few good laughs at the east coast ceremony for the Writers Guild Awards, George Steel and Lou Reed toasted Rufus Wainwright's opening night for the Prima Donna Opera, Brazil's Carnival Festival was brought to Studio 21, Madonna held a last minute tribute for Whitney Houston at Mister H, and so much more. Last night's parties were all about celebrations!

Brad Pitt, George Clooney and the rest of the Oscar nominees gather for the 84th Annual Academy Awards Nominees Luncheon at the Beverly Hilton Hotel; Channing Tatum and Rachel McAdams step out for the premiere of their new film The Vow; Meryl Streep and Glenn Close celebrate AARP Magazine's 11th Annual Movies For Grownups Awards with a cocktail party and ceremony—while most of the country was still recovering from the ritual overindulging that goes hand-in-hand with the Super Bowl, it was another eventful Monday in L.A. and we've got your inside look at the best events and beautiful people who attended them in this edition of Last Night's Parties. More»

HBO kicked things off at Circa 55, where guests like Jane Fonda, Guy Pearce, and Ewan McGregor, and winner Claire Dane munched on beef tenderloin and sipped martinis. NBC had A-listers Jon Hamm, Colin Firth, and Nicole Richie schmoozing under the stars at the Beverly Hilton rooftop - right across from where Harvey Weinstein kept the company of Golden Globe winners Meryl Streep and Jean Dujardin, as well as Leo DiCaprio and countless other guests at his annual party. See this and so much more on our Golden Globes after party round up... MORE>>

After the awards ceremony winded down, celebrities dispersed into the night and the red carpets were rolled out yet again, mostly decking the halls of the Beverly Hilton, where the majority of Sunday's after parties were held. HBO kicked things off at Circa 55, where guests like Jane Fonda, Guy Pearce, and Ewan McGregor, and winner Claire Dane munched on beef tenderloin and sipped martinis. NBC had A-listers Jon Hamm, Colin Firth, and Nicole Richie schmoozing under the stars at the Beverly Hilton rooftop - right across from where Harvey Weinstein kept the company of Golden Globe winners Meryl Streep and Jean Dujardin, as well as Leo DiCaprio and countless other guests at his annual party. More»