I have always been a fan of metallic fabrics but not so much glitter. I would most likely do what Iceblossom suggest by brushing and pre-washing if you have already purchased the fabric. If not I would keep looking for a different fabric only because that would be a lot of work only to have a fabric that you cannot use and cannot return to the store after washing. (I don't keep glitter fabrics in with the rest of my stash).