Mackenzie Ziegler (born June 4, 2004) is an American actress, dancer, singer, and model. She is the younger sister of dancer and actress Maddie Ziegler and is best known for appearing for six years on Lifetime's reality dance show Dance Moms. She has also appeared on other television programs, including the sitcom Nicky, Ricky, Dicky & Dawn, has modeled for Polo Ralph Lauren, and her social media penetration includes more than 6 million Instagram followers. Her 2014 album and its lead single both reached the top of the iTunes charts. Ziegler toured in Australia with her sister in early 2017.