2012 BAFTA Awards Red Carpet Celebrity Pictures: Brad Pitt, George Clooney, Michelle Williams and More

London's Royal Opera House was buzzing with stars as the BAFTA Awards kicked off today. Brad Pitt popped up on the UK red carpet after attending the Berlin Film Festival premiere of In the Land of Blood and Honey with Angelina Jolie last night. He's up for best actor, as is his pal George Clooney, who mingled with Colin Firth and his wife Livia Giuggioli on their way into the show. Presenter Penélope Cruz got glamorous in red while nominees Michelle Williams, Jessica Chastain, Viola Davis and Meryl Streep followed suit in gorgeous gowns. Michael Fassbender was back in front of the cameras following a win at yesterday's Irish Film and Television Awards in Dublin. Other guys to suit up for the event included Jon Hamm, Jonah Hill, Gary Oldman and Jean Dujardin. Chris Hemsworth, who is up for the rising star award, also went with black tie and posed alongside his pregnant wife Elsa Pataky.

Brad, who wore a coat by Dolce & Gabbana over his tuxedo, didn't end up taking home BAFTA gold, since The Artist's Jean Dujardin was declared best actor. Meryl Streep added to her trophy collection with a best actress accolade for The Iron Lady. Octavia Spencer from The Help won best supporting actress, and the corresponding male honour went to Christopher Plummer for Beginners. The Artist also won best picture and best director. Whether they won or lost, many celebs were in a happy mood following the show. Meryl, Octavia, Chris, Elsa and more went to the official after party, and the Weinstein Company hosted another of their famous bashes.