They can be either panty hose or tights... typically it goes (from most sheer to least): panty hose, tights, leggings, ponte pants, regular cotton pants...
They look like tights to me, not leggings:)
Tights
tights, panty hose... definitely not leggings lol.
Perhaps tights.
Tights
Those are tights. Leggings are more solid and stop at the ankles and her tights cover her feet. Pantyhose would be more sheer and show more skin tone.
NO they're pattern tights, perhaps footless tights
Those actually are considered to be leggings as well. But some people consider them "pantie hose" as well.