Nordstrom Anniversary Sale preview and pre-sale is live! And among the thousands of items that will be marked down when the event officially starts, we've found tons of leggings from brands we love.Spanx, Nike, Adidas, Alo and Halogen are just a few of the top brands offering comfy leggings for less. Regular, petite and plus sizes — plus an assortment of colors — are all in the mix.