iHeartRadio Las Vegas Music Festival Pictures

Las Vegas Hearts Jay-Z, Lady Gaga, Usher, Coldplay, and More!

Las Vegas Hearts Jay-Z, Lady Gaga, Usher, Coldplay, and More!

Las Vegas got even crazier this weekend when the biggest names in music descended onto the property of the MGM Grand Hotel and Casino for the two-day iHeartRadio music festival. The good times kicked off on Friday with performances from Jay-Z, Coldplay, Alicia Keys, the Black Eyed Peas, Carrie Underwood, Bruno Mars, Kelly Clarkson, and Jane's Addiction. Saturday night was just as star studded with energetic sets by Lady Gaga, Jennifer Lopez, Steven Tyler, Kenny Chesney, Nikki Minaj, Rascal Flats, Usher, and Sting. Music artists weren't the only big names on hand — American Idol host Ryan Seacrest made the trip to the desert to MC the show and brought along girlfriend, and star of the upcoming dance film Footloose, Julianne Hough. Twilight star Ashley Greene was rolling solo to introduce Rascal Flats while Glee's Cory Monteith welcomed Sublime to the stage.

Friends Alicia and Jay-Z closed down Friday night with a rocking rendition of their hit "Empire State of Mind" as Chris Martin watched on from backstage. There were no signs, though, of mom-to-be Beyoncé or Chris's wife Gwyneth Paltrow. The fans kept up their enthusiasm on Saturday when J Lo rocked out her hits "Papi" and "On the Floor." J Lo looked hot in a sexy red dress! Fresh off her tour with Britney Spears, Nikki Minaj got fans on their feet with her "Super Bass." Lady Gaga wrapped up the second night of festivities with a 50-minute set that included chart topper "The Edge of Glory."

Source: Getty
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