Ginger Zee's ailing back didn't seem to affect her much during the first half of the two-night season finale of ABC's "Dancing with the Stars."

Valentin Chmerkovskiy and Ginger Zee attend the Dancing With The Stars Semi Finals Episode Celebration at Mixology Grill and Lounge on May 16, 2016 in Los Angeles, California. (Photo by Jesse Grant/Getty Images for Earl Enterprises)

The "Good Morning America" meteorologist showed off plenty of flexibility during two performances Monday. The only evidence of pain came after the first dance when Zee was shown holding her back. The 35-year-old tells People magazine that she felt a bit of tightness in her back that "went away."

She says the pain was so bad last week that she couldn't hold her five-month-old son.

A new mirror ball trophy winner will be crowned Tuesday night, when Zee takes the ballroom floor against UFC fighter Paige VanZant and model Nyle DiMarco.

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