Miley Cyrus' tour bus caught on fire ahead of the singer's New Orleans Bangerz concert. The "We Can't Stop" singer's little sister Noah Cyrus sounded the alarm on Twitter, posting videos of the wreckage and assuring fans no one was injured. Noah, 14, shared video of the vehicle in flames with the caption: "Tour bus down!" She also posted photo of the charred bus, once the fire had been put out. It's not known what started the blaze. This is not the first time on of the former Hannah Montana star's tour buses has encountered an issue. Back in 2009, a bus carrying the pop star's lighting crew was involved in a deadly crash near Richmond, Va. Miley, 16 at the time, was not on the bus.