See which of the final three contestants took home the victory Sunday night.
The season 4 winner returns to the "American Idol" stage for powerhouse performance of her new single.
The judges, top three contestants and eliminated singers opened up to ET backstage. 'American Idol' airs Sundays and Mondays on ABC.
Perry and her fellow judges, Lionel Richie and Luke Bryan, dished to ET following Sunday's new live episode.
The '9-1-1' star has her eye on the mirrorball trophy, and we're here for it!
ET's Sophie Schillaci chats with the 'American Idol' judges after Sunday night's shocking elimination.
The songstress shared sadness at having to send a talented singer home.
Katy Perry opened up to ET backstage at 'American Idol' about the adorable pianist's performance.
The singer and 'Idol' judge revealed to ET that the adorable pianist was kind of sweet on her.
From the purple face paint to eating shrimp on stage all night, Katy Perry was truly committed during Sunday's 'American Idol.'
The 'Idol' judges opened up to ET after Sunday's live show and dished on Perry's jaw-dropping 'Little Mermaid' ensemble.
The 'Idol' judges also dished on Lionel Richie's off-script save.
ET spoke with the 'American Idol' judges after the Live performances on Monday about the group of talent.
The pressure was on for the remaining contestants as they vied for a coveted spot in the top 10.
