Katy Perry Rocks at iHeartRadio: Watch Here!

Katy Perry Rocks at iHeartRadio: Watch Here!

Giving concert-goers a medley of her chart topping hits, Katy Perry took the stage at the iHeartRadio festival in Las Vegas on Friday night (September 20).

Looking school girl chic in a plaid skirt and tennis shoes, the “Roar” songstress jazzed up her ensemble with a belly baring leather top as she sang for the enthusiastic crowd.

The California native was joined on stage by Juicy J for a duet of “Dark Horse,” then launched in to her classic tunes such as “Firework” and “Teenage Dream.”

The iHeartRadio Festival continues on Saturday with performances by Justin Timberlake, Miley Cyrus and Ke$ha.

Check out Katy singing “Dark Horse” and “Wide Awake” in the players below!