The 29-year-old pop star rocked a bright green wig during her balloon-adorned performance, which was pretaped during her Prismatic tour in Newcastle, England, earlier this month.
Perry released the official clip for "Birthday," the fourth single off her fourth record Prism, in late April. The video finds the singer in different costumes as she crashes several birthday parties pretending to be a clown, an aging dancer, a Bar Mitzvah MC, an animal expert, and a princess.
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