Pop megastar Sia nearly went unnoticed as she strolled through New York City. The 49-year-old singer was out with her family but, donning a black longline raincoat with a black cap and her hair in ...

In a night of big moments, Afrojack helped deliver one of the very biggest when he brought out French titan David Guetta and one of history's all-time singers, Sia, to perform their 2011 classic ...