Same thing happened to me, but some small fishnet tights at F21 for around $3 for homecoming, and they started to break the day of the party, but got to admit they look really good and makes your legs look AMAZING! But the durability needs work =\
they're very comfortable and the designs are cute. but some rip easily. prices are reasonable though.
i bought some lace tights from from forever 21 and they were extremelt cute, but they ripped in a matter if days. If you want to buy tights from forever 21, just buy them in quantity or variety so you mix them up, and you won't wear them down as quickly, i wonder if that helps!!
God bless andy