The robot is simply the illusion of being a robot. Movements of the robot are
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World Top Dancer Gallery
Description:
Lacey-Mae Schwimmer is an American competitive ballroom dancer, and the winner of multiple youth championship awards. She is best known as one of the Top 4 Finalists on the 2007 season of So You Think You Can Dance.
She participated in so you think you can dance season III ,she was one of the top 18 contestants.
Lacey Schwimmer was eliminated in week-9. That week she performed "Dancing"—Elisa, style was Contemporary with Kameron Bink