Judging from the few behind-the-scenes Instagram posts Taylor Swift has shared, I assumed she practiced for her sets predominantly in Free People athleisure, compression leggings, and the like.

Taylor Swift's Eras Tour is a test of endurance and strength, with performances lasting over three hours. Celebrity trainer Kirk Myers has worked with Swift to develop a fitness routine ...

"I heard that and thought, 'That's a genius idea. I'm gonna do that,'" Sarah Snook said in an interview.

Sarah Snook, now featuring in 'The Picture of Dorian Gray' on Broadway, drew inspiration from Taylor Swift’s fitness approach ...