11 year old in a leotard doing extremely expressive dancing in a beautifully-shot and directed video. What's wrong with that? 

Sia's Chandelier video, directed by Daniel Askill and Sia and starring young Maddie Ziegler, star of reality show Dance Moms, is beautifully executed - with great choreography by Ryan Heffington. And it's contentious in its depiction of child-as-adult.