The Piece by Piece performer treated fans to a rather impromptu Facebook Live performance on Friday, October 28, using the social media site to cover Australian pop star Sia's beloved sad party girl ...

When it comes to powerhouse singer-songwriter supreme Sia, it's all about that voice. From her early days as a quirky Adelaide-bred singer on the rise with albums like Some People Have Real Problems ...

Appearing on Facebook Live on Friday, Clarkson appeared in Sia’s infamous wig ahead of her annual Halloween party to put on a show for her fans. And, embodying Sia, she sang an a cappella cover of ...

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 ...

All you really need for a Sia Halloween costume is the wig, but extra credit if you have pipes like Kelly Clarkson. The singer donned the infamous hair piece for a low-key a cappella rendition of ...