Gerard Butler

Before the White House Correspondents' Dinner took place in Washington DC last night, a roster of Hollywood stars were on-hand to kick things off. Downton Abbey met Mad Men when Michelle Dockery and Jessica Paré made the rounds at The New Yorker's party. Jessica said hello to Michelle during a break from making the rounds with her apparent new guy, Canadian musician John Kastner. Chrissy Teigen and John Legend showed PDA at a People and Time bash, while Gerard Butler, who told us it's his first time in DC for the Correspondents' dinner, made the rounds along with Gayle King, Gabby Douglas, and more. Click through to see who turned out in the capital last night!

Additional reporting by Annie Scudder

Jessica Biel donned a long Versace gown on the red carpet at last night's NYC premiere of Playing For Keeps. She posed for photos solo, as did her co-stars in the film Gerard Butler and Uma Thurman. Later, though, Jessica had the company of her husband, Justin Timberlake. Jess changed into a hot mint-green Nina Ricci dress to hit the after-party with JT on her arm. Jessica and Justin have spent quite a bit of time in NYC since their Italian wedding back in October. She's done double promotional duty with two films out this season, Playing For Keeps and Hitchcock. In one interview, she opened up about the joys of life when you're married to a guy who can cook. Jessica Biel told Elle, "He bakes pies. He's Southern, so he's got all this influence from his grandma. He does a three-layer pie . . . and blueberry crunch cake, which is pretty unbelievable. It doesn't happen all that often, thank god. Otherwise, it would be a big problem."

The 2012 Summer Olympics start today! Stars around the world will tune in to see the games or, if they're lucky, may be able to check out sporting events in person. More than 200 countries sent athletes to compete in London. The opening ceremony is taking place right now, so we're rounding up some of our favourite celebrities from participating nations. Click through to see which countries these stars represent.

Sunday night's Lakers game brought out a range of celebrity guests, with Nicole Richie and her pal Kelly Sawyer right near the front row. She shared one of her characteristic witticisms on Twitter, sharing a picture of the players and writing, "Balls flying at my face . . . What else is new?" She watched as the home team took on the visiting Grizzlies, but ended up losing 102-96 at the Staples Center. Nonetheless, the Hollywood crowd rooted for their boys. Ashton Kutcher was there with friends, as was Gerard Butler and David Beckham. Sarah Hyland stayed close to boyfriend Matt Prokop and buddy Ashley Tisdale. Modern Family star Sarah was happy to be in the stands, tweeting, "Going to my first Laker game of this season. Finally! So excited. It's been too long."

Michelle Williams clutched her best actress in a comedy or musical Golden Globe for My Week With Marilyn en route to the Weinstein Company's after party last night. She posed on the carpet withouth her best friend and date, Busy Philipps. The girls met up inside, though, and Busy later tweeted her happiness for Michelle. Busy wrote, "That was genuinely one of the most fun nights ever. So incredibly proud of my best friend!" Harvey Weinstein got shout-outs in mutiple acceptance speeches last night, being alternatively referred to as "the punisher," or in a memorable quip from Meryl Streep, as "God." Meryl was another winner who turned out for the company's event. She took home the best actress in a drama honour for The Iron Lady.

Rosie Huntington-Whiteley, who's a close friend of Harvey's, caught up with his wife, Marchesa designer Georgina Chapman. Jason Statham, Rosie's boyfriend, was also there to share champagne with guys like Rob Lowe, Alexander Skarsgård, and Gerard Butler. Lots of stars and friends-of-the-famous rolled through the bash, including Cameron Diaz (modelling her new 'do), Lindsay Lohan, Paris Hilton, and a Beverly Hills housewife. Nominees like Octavia Spencer, Downton Abbey's Elizabeth McGovern and winner Kelsey Grammer also stopped by — click through to see all the pictures!