Martha Stewart

Anne Hathaway and Sarah Jessica Parker brought Hollywood to the art world when they attended the Tate Americas Foundation Artists Dinner in NYC yesterday. Anne wore a pink Givenchy dress and styled her new blonde hair in a chic '60 pixie cut. Meanwhile, SJP wore a vintage floral dress and Fendi cuffs as she chatted with Anne inside the party. Both Anne and Sarah Jessica had crossed paths earlier this week when they both attended the 2013 Met Gala on Tuesday. They weren't the only stars still basking in the post-Met glow — Alexa Chung, who attended the ball earlier this week, also dropped by the Tate dinner and got a chance to chat with Anne and her husband, Adam Shulman. Ciara and Martha Stewart also attended the artsy affair.

No one throws a party like François Nars. The makeup maestro attracted a fabulous line-up of A-listers from the fashion world to help him celebrate the launch of his new beauty bible, Makeup Your Mind: Express Yourself in NYC  yesterday. Bright lips (or nails in Alexa Chung's case) were the go with designers Anna Sui and Erin Fetherston, stylist June Ambrose and actress Lily Rabe all picking punchy pouts for the occasion. Latvian model Ginta Lapina looked beautifully fresh-faced, while Lake Bell easily took home Best Blushed award. Check out all the party snaps! Are you excited for François's new book?

The 2011 Tribeca Film Festival has been a star-studded affair, kicking off with the world premiere of The Union earlier last week and the Chanel dinner, both drawing celebs aplenty. The 10th annual Vanity Fair Party was no exception, with Robert De Niro making an appearance, as well as Jerry Seinfeld, Twilight's Anna Kendrick, Abigail Breslin and more!

Celebs gathered in New York to celebrate Time magazine's annual 'World's 100 Most Influential People' issue. Check out our gallery of stars who made the list, including Blake Lively (with her new red 'do), Amy Poehler, Sting and Mark Wahlberg, plus on the red carpet actresses Kerry Washington, Twilight's Anna Kendrick as well as singer Bruno Mars and Glee's Chris Colfer all made an appearance.

Twitter was fluttering with activity this week as our favourite tweeting celebrities shared behind the scenes glimpses into their personal lives. Russell Brand took a break from shooting Arthur to make friends with Elmo while Eva Longoria kept cooking up a storm in her kitchen. Newcomer to tweeting, Kanye West, showed off his bedazzled mouth accessory and Twilight's Anna Kendrick posed with some props—click through to see all the shots!

Twitter was buzzing with lots of activity this week as some of our favourite celebs shared photos from the road, their homes and even the bathroom. Jared Leto went wild with a pink mohawk, as Jessica Alba shared pics of adorable Honor. Tom Hanks had the daunting task of sorting out a filming schedule, while Demi Moore kicked up her feet. Click through to see what they were up to!