Dance Moms' alum Mackenzie Ziegler shows off her stunning physique in a gray bikini in celebration of her 21st birthday!

The 'Dance Moms' star teamed up with Zahn and his daughter Audrey in the heartwarming Tribeca Festival premiere 'She Dances.' ...

Kenzie Ziegler celebrated her 21st birthday looking stunning in a gray bikini, accessorized with a gold body chain and wet hair in the shower ...