What to Read Next

Video: Rob and Kristen Sing "Happy Birthday" With Katy Perry, Plus More Headlines!

Sugar Videos
March 22, 2013

Robert Pattinson and Kristen Stewart continue their reunion tour! The couple was spotted outside a karaoke bar in LA earlier this week, and now they're singing "Happy Birthday" with Katy Perry - get the details, find out why mom-to-be Fergie "has no idea what's she doing," and discover which upcoming film is combining the comedic power of Will Ferrell and Kristen Wiig.