Actress Kate Hudson introduced the singer formerly know as Katy Hudson (now known as Katy Perry) to the 2013 iHeartRadio Music Festival stage.
Katy took it from there playing a mash-up of some of her biggest hits including 'California Girls' and 'Teenage Dream.'
PHOTO: Brian Friedman for iHeartRadio
She also debuted her new single 'Dark Horse' featuring Juicy J, which is off her upcoming album 'Prism.'
PHOTOS: Katy Perry performing at the 2013 iHeartRadio Music Festival
"I missed you," proclaimed Katy as a boxing ring came out on stage for her epic performance of 'Roar.'
PHOTO: for iHeartRadio
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