"Taylor Swift Style" Author Sarah Chapelle Lists Her 8 Swift-Coded Must Haves

Popflex Supersculpt Leggings With Pockets ($60)

Chapelle is a regular gym goer, explaining to PS that her workouts involving weight training and the elliptical — or even a Megaformer Pilates or dance class — keep her sane. Her choice in workout clothes? The Swift-approved brand Popflex — specifically the Supersculpt Leggings. "If it's good enough for Eras Tour rehearsals, it's definitely good enough for my regular gym workouts. Like writing, exercise is another form of a personal 'outlet' for me. The [Popflex] owner is a Swiftie and it's been so amazing to see her patented designs get recognized. I love the way these leggings hold me in and also have no front seam," she says.

Read our PS editor review of Popflex Active and check out the bestselling Popflex products, according to brand founder Cassey Ho.