blogger Perez Hilton at his Hollywood birthday party when she showed up on an elephant.
The pop star joined Melanie Brown, Lindsay Lohan, Paula Abdul, Liza Minnelli, Justin Bieber and Leona Lewis among the celebrities at the Saturday night party, held to mark Hilton's 32nd birthday, reports contactmusic.com.
Lewis kicked off the fun at Paramount Studios by singing "Bleeding love" and "Outta my head", thanking the blogger for his support, while rapper Eve and Minnelli also performed.
But the highlight of the circus-themed event came after a montage of video tributes from the likes of Kylie Minogue and Lady Gaga when scantily-clad Perry arrived, singing "Happy birthday", on the back of an elephant.
