JoJo Siwa is only 16 years old, but she's already captured the hearts and imaginations of fans around the world -- and she's not slowing down Dream Crazy Big traces every step of this young star's rise to success, from making a splash on shows like Abby's Ultimate Dance Competition and Dance Moms to creating hilarious YouTube videos and releasing hit songs like "Boomerang" and "#1U." With dozens of full-color photographs...