Last month, Kelly Clarkson challenged her fans to submit videos of a predetermined dance routine to be used in her clip for "What Doesn't Kill You (Stronger)." "I'd like everyone to join me in my global flash mob!" the pop star wrote. On Wednesday (Dec. 14), the finished clip was revealed, with shots of Clarkson fans performing the routine interspersed with glossy performance footage of the former "American Idol" star.
At the beginning of the clip, Clarkson is sitting in a video control room, watching her fans show off their best dance moves while apparently signaling actors to get in place for a flash mob. At the 2:30 mark, all the dancers assemble behind Clarkson for a joyful rendition of her routine -- and the singer even throws in a few karate moves for good measure.