See Miley Cyrus Join Billy Idol for 'Rebel Yell' at iHeartRadio Fest

Miley Cyrus made a surprise appearance during the first night of the iHeartRadio music festival at Las Vegas' T-Mobile Arena, joining Billy

This article originally appeared on www.rollingstone.com: See Miley Cyrus Join Billy Idol for 'Rebel Yell' at iHeartRadio Fest

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