The iHeartRadio Music Festival kicked off with a bang at the MGM Grand in Las Vegas when stars such as Miley Cyrus, Olymic gold medalist Ryan Lochte, Korean pop star Psy and a host of others took center stage for the opening night on Friday!

Other artists such as Bon Jovi, Lil Wayne, No Doubt, Rihanna and more tore the house down in what was an amazing night full of top notch performers!

Miley herself didn't perform for fans as she was a special guest presenter, but that didn't stop the 19-year-old Hannah Montana star from having a little fun. Besides getting a little cheeky with host Ryan Seacrest, Miley has been using her celebrity for as she joined Josh Duhamel, Kathy Griffin and more for in a Rock The Vote PSA dedicated to the upcoming election.

Check out the star-studded PSA after the jump. Way to get involved girl!