Niall Horan Strums ‘Heaven,’ Talks Katy Perry Saving Him on ‘X Factor’ in Emotional Final ‘Late Late Show’ Appearance

Katy Perry sparkles in sequined crop top as she heads into Jimmy Kimmel Live studio in Hollywood

Katy Perry Strikes a Pose While Modeling Bold Look Ahead of 'American Idol' Season Premiere

Orlando Bloom Reveals Why Katy Perry Relationship Can Be "Challenging"