Pitt and Jolie take in the L.A. art scene. Plus: Demi, Drew, Nicollette and more

'POP' PRINCESS

Beyoncé gets a beefcake for her belated birthday party at Canada's MuchMusic Network, where she appeared on Live@Much Thursday. The B'Day gal – who turned 25 on Sept. 4 – took airborne questions from the fans via a fleet of red balloons.