Katy Perry Sets Off Her “Firework” On ‘The X Factor’

Katy Perry sounded as if she was in much better vocal form on The X Factor last night than when she appeared on Wetten, Dass…? earlier this month. The Cosmopolitan-covering California gurl belted out her third Teenage Dream single “Firework” on the UK program, where her backing dancers dazzled the audience with a surprise pyrotechnic ... More »

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