Katy Perry in James Corden's World Cup Live (2010)

Lionel Richie, Luke Bryan, and Katy Perry in American Idol (2002)

P!nk and Katy Perry in MTV Europe Music Awards Liverpool 08 (2008)

Katy Perry in MTV Europe Music Awards Liverpool 08 (2008)

Grace Jones and Katy Perry in MTV Europe Music Awards Liverpool 08 (2008)

Katy Perry in Macy's 4th of July Fireworks Spectacular (2012)

Lionel Richie, Ryan Seacrest, Luke Bryan, and Katy Perry in American Idol (2002)

Katy Perry in Katy Perry: The Prismatic World Tour (2015)

Katy Perry in Katy Perry: Part of Me (2012)

Katy Perry at an event for Katy Perry: Part of Me (2012)