Most of Hongyu's V4 outfits with stockings have that morph. They also have morphs on the stockings for them being pulled up by the garters.

Now I'm just waiting for someone to create a hybrid dynamic garter belt. (So that the straps don't cling to the figure when the thigh is bent. The dynamic straps would have to be attached at both ends. You could then shrink them in the y-axis to make them straight.)