Zella is part of the Nordstrom Product Group (NPG) and is comparable to lululemon and ALO Yoga. My favorite Zella item is their Live In Leggings. Zella does not pill. The quality and price point are excellent.
Sizing: True to Size (TTS)
Discounts: Buy Zella on Nordstrom and discounted Zella and Z by Zella at Nordstrom Rack.