I Kissed A Girl singer Katy Perry sits on a giant oyster shell while performing at a charity event in Vienna, Austria.
She was helping to raise money at the Life Ball for people with HIV/Aids. Pamela Anderson performed a racy musical number in a bikini at the charity do. The annual event is held in and around Vienna’s city hall and draws in thousands of revellers. Former Moloko singer Roisin Murphy performed at the charity event. Ex-US President Bill Clinton also gave a short speech to the 4,000-strong crowd. He set up an HIV/Aids initiative in 2002.