Julia Roberts, Meryl Streep, Ewan McGregor, Juliette Lewis, and the rest of the all-star cast celebrate the L.A. premiere of August: Osage County; Heidi Klum, Neil Patrick Harris, Rachel Roy, and more join Tim Gunn at the "Under The Gunn" Finale Fashion Show; Danity Kane reunites on the stage for their first show in six years at House Of Blues—peek inside Monday's top events in this installment of Last Night's Parties.