May 18th, 2009 | 11:54 am Pam Anderson: Crazy For Charity by Lauren Olson (Deiman) « Return to post katy_perry_g.jpg ◄ Back Next ► Picture 1 of 5 Katy Perry performs at the 17th Life Ball ceremony in Vienna on May 16, 2009. Life Ball is Europe's largest annual AIDS charity. [Photo: Getty Images] « Return to post
