Happy new year everyone, here’s to a great 2011.Kirsten saw in the new year at the Grand Opening of the Marquee Nightclub at The Cosmopolitan (hotel) of Las Vegas. The star-studded event featured performances by Jay-Z & Coldplay, & they were joined onstage by Beyonce, John Mayer & Kanye West. Kirsten looked stunning in a short white dress & she was accompanied by her boyfriend Jason Boesel & some of her best friends.I’ve added 30 pics to the gallery.