Maddie Ziegler is showing some sisterly love! In celebration of sister Mackenzie Ziegler's 18th birthday on Saturday, the Fallout star posted two pictures of them as kids alongside a sweet caption.

Maddie and Kenzie Ziegler in 2023 (left) and at the Nickelodeon Kids' Choice Awards in 2014 (right). The Ziegler sisters have grown up in the spotlight — and so have their styles. Earlier this month, ...