This Blake Lively photo contains
hip boot, thigh boot, chaussant, le tuyau, bonneterie, tuyau, jambière, leging, revêtement de la jambe, legging, couvre-jambes, and revêtement de jambe.
There might also be
jambes nues, collants, pantalons moulants, skintight, pantalon skintight, pantalon collant, collant, stockage, empoissonnement, collants, justaucorps, and léotards.