They don't maintain their stretch...they are huge!  i ordered thigh high socks of the same brand and those fit fine so I'm thoroughly confused as to the disconnect here regarding the sizing of these Opaque Nylon Thigh Highs by Leg Avenue.  I'm 5'1" no more than 107 pounds, so yes petite, but not incredibly tiny!  These are absolutely huge and I cannot wear them!  They are too long, do not maintain or hold their stretch and ended up falling down over and over.  Very disappointed.