The heiress gets cracking as a domestic fräulein in Berlin. Plus: The Spice Girls, Britney, Brad and more

GUITAR HERO

John Mayer hooks up with HSM stars and real-life couple Zac Efron and Vanessa Hudgens at the afterparty for Walk Hard: The Dewey Cox Story on Wednesday. Also in attendance at the bash held at Hollywood Social: Sacha Baron Cohen and Will Ferrell.