Celebrities got social this week on- and off-line. Rachel Zoe and Rodger Berman showed their support for the Bill Clinton Foundation, while Katherine Heigl and Josh Kelley kissed at an event for women in Hollywood. Britney Spears gave a thrilling performance to her Swedish fans, and Usher horsed around — click through to see all the pics, and don't forget to follow PopSugar on Twitter for Read more

Celebrities got busy this week tweeting photos from family functions, on the road, and at Coachella. Nicole Richie joined a group of girlfriends for a wild weekend in the desert as Robert Pattinson made his way through the Big Apple promoting Water For Elephants. Sir Paul McCartney and Usher partied the night away and Neil Patrick Harris shared a sweet photo of David Burtka and their tiny twins, Read more

John Mayer threw on a black jacket and headed out for lunch at LA's Madeo yesterday. The singer's been keeping a relatively low profile the past few months with minimal blog posts and public appearances, but all of that is about to change with news that he's one of the many headlining acts expected to rock Las Vegas during September's IHeartRadio music festival. The two-day event will also bring Read more