Rihanna, Pink, Usher, No Doubt, Lil Wayne, Psy, Keyshia Cole Perform On Day 1 Of iHeartRadio Music Festival [Video/Pics + Rihanna's Full Set Inside]

Video And Pictures After The Jump

The iHeartRadio Music Festival kicked off Friday night at the MGM Grand in Las Vegas. There was plenty of star power in the building with performances from Lil Wayne, Keyshia Cole, Usher, Psy, Pink, No Doubt, Rihanna, Green Day and Bon Jovi.

Weezy turned things up during his set by performing many of his hits including “How to Love,” "Lollipop" and “No Worries.” He surprised the sold out crowd by bringing out Keyshia Cole during his set so she could perform "Enough of No Love.”

The highlight of the night for Weezy came after the show when he got to meet a young cancer patient, which he Tweeted about.

Usher took things up a notch during his set by performing many crowd favorites including "Yeah," "DJ Got Us Fallin In Love Again," "Scream" and his David Guetta collab "Without You."

Rihanna closed out the show and didn't disappoint. Riri sang "Only Girl," "S&M," "Cockiness," "Birthday Cake," "Umbrella," "We Found Love," "Talk That Talk," "Where Have You Been," "What's My Name?," "Disturbia," "Run This Town," "Live Your Life," "All of the Lights" and "Don't Stop the Music."