Katy Perry Reveals How She Squeezed Into Ariel Costume for 'Idol' Disney Night (Video)

Katy Perry Dishes on Elaborate 'Little Mermaid' Costume She Wore for 'American Idol' Disney Night (Exclusive)

Katy Perry falls out of chair on American Idol while wearing Ariel mermaid costume on Disney Night

Katy Perry Falls Out Of Her Chair While Dressed As Ariel During ‘Idol’s Disney Night: Watch