Spanx activewear | leggings | workout Sizing details: Wearing my true size small in the booty boost leggings. I love these work out pants. The compression is like no other, they stay in place, hold you in and are flattering. They’re a no fuss work out pant 🙌 Wearing a medium in the sports bra and work out tank. Wearing a medium in the AirEssentials sweatshirt. It fits nice and oversized but I also have a small in another color and that fits great, too. Just not as oversized.