Mackenzie Ziegler (born June 4, 2004) is an American dancer, singer, actress and model. She is best known for appearing for six years on Lifetime's reality dance show Dance Moms and is the younger sister of dancer and actress Maddie Ziegler. Ziegler 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 8 million Instagram followers, 9 million Musical.