The reality TV star hits the campaign trail for Dancing with the Stars in Beverly Hills. Plus: Matt Damon, Jessica Simpson, Marc & J.Lo and more

TEENS UNITE

Joe Jonas – and his brothers (not pictured) – join Miley Cyrus to perform for a good cause at the City of Hope benefit show Sunday at the Gibson Amphitheater in Universal City, Calif. Fellow Disney teen queen Demi Lovato (not pictured) also sang at the show, which raised money for cancer research.