Katy Perry, Orlando Bloom, Conan O'Brien, Chloe Sevigny Nikki Reed and many other A-listers get chummy on the rooftop of a charity event hosted by Coach and J.J. Abrams; Morgan Freeman and Tom Cruise pose for photos with their fans at the Oblivion premiere in Hollywood; Kyle Richards and Rosanna Arquette hang out at the TEEN LINE Food For Thought Luncheon—see who was out on the town hitting L.A.'s top events yesterday in this installment of Last Night's Parties.