Mackenzie Ziegler Slays DWTS: Juniors Finals Routine to Her Own Song, 'What If' (Exclusive)

In a sneak peek clip from the highly anticipated finale, Mackenzie Ziegler performs a spicy Cha Cha with mentor Gleb Savchenko. The 'Dancing With the Stars: Juniors' finale airs Sunday, Dec. 9 at 8 p.m. ET/PT on ABC.

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