Well, if this isn't the biggest news of 2017. Sia, Australia's most prominent pop export is coming back to Australia to perform in two stadium shows in Melbourne and Sydney as part of her Nostalgic for the Present Tour. Sia is undoubtedly one of the biggest pop stars in the world working with everyone from Kendrick Lamar to Beyoncé. Sia was the most-streamed female artist on Spotify last year, and in August last year, she became the first woman over 40 to top the US charts with her hit Cheap Thrills. But perhaps the most exciting part of this news is the fact that indie-pop sensation Amy Shark has been announced as a support act alongside global superstars Charli XCX, and MØ.