Miley Cyrus's surprise entry with Billy Idol left audience enthralled

In a surprise performance, pop wild child Miley Cyrus set the Sin city on fire with rock star Billy Idol at the 2016 iHeartRadio Music Festival.

The duo performed his 1983 super hit 'Rebel Yell'. After suddenly appearing on stage, the 23-year-old singer told the crowd, "I'm singing with Billy (fucking) Idol, let's do it!", reports E!Online.

The 'Wrecking Ball' hit maker looked absolutely smashing in all black attire.

As a tribute to the 60-year-old musician, she sported a pair of sunglasses with his name emblazoned across it, her leather jacket had an image of Idol's face on the back and leather pants that had "I [love] Billy Idol" written down both legs. Suffice to say she's a big fan.

Meanwhile, her beloved fiance Liam Hemsworth was in the audience supporting his lady love, and the two kept the party going with a post-performance stop by Las Vegas' Omnia nightclub.

Joined by some of their close friends, an eyewitness told, "The entire group seemed to be in good spirits.