This Harry Styles photo contains
jambière, leging, revêtement de la jambe, legging, couvre-jambes, revêtement de jambe, hip boot, thigh boot, pantleg, and pantalon.
There might also be
chaussant, le tuyau, bonneterie, tuyau, jambes nues, collants, pantalons moulants, skintight, pantalon skintight, pantalon collant, and collant.