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iHeartRadio Music Festival: Lady Gaga, Jennifer Lopez, Steven Tyler Close The Show (PHOTOS)

First Posted: 09/25/11 11:23 AM ET   Updated: 11/25/11 05:12 AM ET

Lady Gaga, Jennifer Lopez and a whole slew of other artists closed the iHeartRadio Music Festival with a bang Saturday night at Las Vegas' MGM Grand.

Gaga's little monsters were out in full force, as were fans of Lopez and her fellow "American Idol" Steven Tyler and Randy Jackson, who both took the stage.

Other performers of note: Nicole Scherzinger, Rascall Flatts, Kenny Chesney, Sublime, Natasha Bedingfield and Sting -- who even momentarily locked lips with Gaga herself on stage.

Justin Timberlake also took to the stage but, unfortunately, he only spoke to the crowd.

The jam-packed second night of the festival followed its opening night, where The Black Eyed Peas, Bruno Mars, Jane's Addiction, Coldplay and Jay-Z were just some of the performers.

iHeartRadio's first music festival proved successful -- tickets for the two-day fest sold out in just 10 minutes last month.

Check photos from both days of the iHeartRadio Music Festival below!

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  • Jennifer Lopez

  • Jennifer Lopez

  • Jennifer Lopez

  • Jennifer Lopez

  • Lady Gaga

  • Lady Gaga

  • Nicole Scherzinger & Randy Jackson

  • Jeff Beck & Steven Tyler

  • Lady Gaga

  • Steven Tyler

  • Lady Gaga

  • Karmin

  • Natasha Bedingfield & Rascal Flatts

  • Kenny Chesney

  • Lady Gaga & Sting

  • Kenny Chesney

  • Nicole Scherzinger

  • Justin Timberlake

  • Lady Gaga

  • Rascal Flatts

  • Lady Gaga

  • Nicki Minaj

  • Dr. Dre & DJ David Guetta

  • Sublime

  • Bruno Mars

  • Jonny Buckland, Chris Martin, Will Champion and Guy Berryman

  • The Black Eyed Peas & Jabbawockys

  • The Black Eyed Peas

  • Jane's Addiction

  • Carrie Underwood & Joe Jonas

  • Coldplay

  • Fergie of The Black Eyed Peas

  • Coldplay

  • The Black Eyed Peas

  • Ryan Seacrest

  • Jane's Addiction

  • Alicia Keys

  • Jay-Z

  • Jay-Z & Alicia Keys

  • Coldplay

  • Dave Navarro Of Jane's Addiction

  • Ryan Seacrest & Julianne Hough

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Filed by Kelly Fisher  |