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.

This list would be incomplete if I left out what may arguably be the most well-known leggings around — and it only makes ...

Where anyone else would carry a common gym bag or an extra-large tote, Lopez chose Dior's D-Journey bag, a style she's been ...

Gym buddies! Taylor Swift and Selena Gomez ditched the makeup ... Swift, 26, sported an oversized black, hooded sweatshirt with leggings while Gomez, 23, opted for a pink sports bra and leggings.