Cold, schmold! Watch Katy Perry sing 'Firework' with tissues stuck up her nose

EW.com - 03-22

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Katy Perry is a “Firework,” with or without tissues up her nose. In EW’s exclusive preview of this Sunday’s American Idol, the 34-year-old judge is feeling under the weather. But it’s Hollywood Week, one of the toughest parts of the competition, so the show must go on.