I've got those, too - well, at home - but I don't think they'd look much like what you'd be thinking of.

( substantially less fabric; probably rather a lot finer, too. )

These are just from the set that came with me when I arrived. There's a top and a robe, as well.

( the robe which is now a copy of itself made for her by severus-- the original version transfigured into another item of clothing. )