If anyone is in need of fabrics for costuming, here's a lead…

Jo-Ann Fabrics in Peoria's Metro Centre.

The store is larger than the Bloomington store and carries a wider array, especially in ethnics and wedding fabrics. (There is a section called Sari Silks, honestly, right next to the Asian silks.)
Also, there are 2 large clearance racks, which contain everything from chiffons to denims to suede. (Not all are costumable, but there are some nice gems in there if you're willing to look.) One rack is just next to the cutting table (to your left as you come in the door) and the other is in the left corner of the store.
There's also a wide variety of embellishments available in the store, both "clothing" and "upholstery." (As if upholstery embellishments would be off-limits to dancers… yeah right.)
There's beads and jewelry-making goods, iron-on embroidery embellishments, and all that (though I can't say this is the best store to find those items.)

If you need costuming stuff, it will be worth the drive to check it out.