Katy Perry is a “Firework,” with or without tissues up her nose.

Katy Perry: Aktuelle News, Infos & Bilder | BUNTE.de

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.

How old is Katy Perry? – The Sun | The Sun

Perry proves to fellow judges Luke Bryan and Lionel Richie that being a pro means being able to belt it all out, even a doozy like “Firework” with tissues sticking out of your nostrils, which was the case when the singer couldn’t stop sneezing.

Instead of dropping the mic, she dropped the tissue.

Katy Perry On American Idol Return After Giving Birth: It Was 'Intense' –  Hollywood Life

American Idol continues this Sunday and Monday at 8 p.m. ET on ABC.