Find Out How Britney Spears, Ariana Grande and More Celebs Are Up-ing Their Fitness Fashion!

5:10 PM PST, Tue Feb 20, 2017

A-list trainers Harley Pasternak and Simone De La Rue talk to ET about the latest workout gear trends!

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Find Out How Britney Spears, Ariana Grande and More Celebs Are Up-ing Their Fitness Fashion!

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On Entertainment Tonight

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