Why Are Demi Lovato's Hands Painted Black On 'Heart Attack' Set?

Photos from Lovato's video set show the singer in a white bathrobe and her hands dipped in black paint.
By Driadonna Roland, with reporting by Jocelyn Vena

Source: http://www.mtv.com/news/articles/1703708/demi-lovato-heart-attack-video-set.jhtml

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