10 Teenagers who changed the world in 2015 (With Pictures)

2. Maddie Ziegler

Maddie Ziegler is the young star of one of the most popular music videos of 2014. In Sia’s “Chandelier,” at just 11 years old, Ziegler dances around an old building wearing a Sia-like wig. Her dance routine was so popular that several celebrities imitated it. Ziegler starred in another of Sia’s music videos this year, “Elastic Heart,” opposite Shia LaBeouf. On top of dancing, she has also acted and worked as a model for Target and Ralph Lauren. Pretty impressive for someone who just became a teenager this year.