Madison Nicole Ziegler, born in Pittsburgh, PA, is an award winning professional dancer and actress. She starred in Lifetime's Dance Moms for six seasons, and was the lead dancer in Sia's critically acclaimed music videos 'Chandelier', 'Elastic Heart', 'Big Girls Cry', 'Cheap Thrills' and 'The Greatest'. Maddie was also a judge on So You Think You Can Dance: The Next Generation and will make her film debut in Focus Features' The Book of Henry. She will also lend her voice to the Weinstein Co.'s animated feature, Ballerina, which is released worldwide in 2017.