Miley Cyrus Performs with Billy Idol at iHeart Radio Music Festival

Miley Cyrus made a surprise appearance at the iHeart Radio Music Festival at the T Mobile Arena in Las Vegas tonight, September 23. She joined Billy Idol on stage to sing his hit, “Rebel Yell”.

Miley showed her full support for Idol rocking glasses and leather pants emblazoned with his name. She was not slated to take part in the festival at all but hit the stage tonight as a thrilling spur of the moment guest.

Miley’s main squeeze, Liam Hemsworth, was also in attendance. The young actor was spotted by fans hanging backstage in order to watch as Miley performed with Billy. You can check out a photo of them with fans here.

You can catch Miley when The Voice returns Monday, September 26!