JUST ADDED: 5 Seconds of Summer will be rocking the stage at this year's iHeartRadio Music Festival Village in Las Vegas! The band sat down with Ryan Seacrest to break the news. Click here to buy your tickets now, before they sell out!
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
INTERVIEW: Katy Perry, the Pegasus?
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