While Kristen and boyfriend Robert Pattinson originally planed a low-key dinner party at home, the Twilight stars ended up at the bar No Vacancy at Hotel Juniper last night with a group of friends—where they happened to stumble upon a record release party for Hanson. A source exclusively told E! News that Rob and Kristen arrived at around 11 p.m. and spent time in both the main room and VIP area as part of a group of roughly a dozen people. "They weren't overly affectionate or anything, but at points they were standing together as they talked to friends," the source says. It didn't appear to be formal birthday party, with no one bringing out a cake or otherwise publicly marking Kristen's big 23, but she and Rob were still there at 1 a.m. Meanwhile, "Get the Girl Back," the first single off of Hanson's upcoming album Anthem, dropped yesterday—hence the Hollywood celebration. It remains unclear, however, whether K-stew and R-patz happen to be Hanson fans, or if they even knew that they were sharing party space with the trio.
