I've found some fabric at Goodwill often enough times that I've made a full proper Gentlewoman's polonaise from period style fabric. One can occassionally find fabric one can make a waistcoat out of. That is if you are handy with sewing or know someone who is. Also, watch local fabric stores. They often will run discounts on fabric and sometimes you can get fabric REAL cheap like a dollar or $2 a yard or three. Cottons or waistcoat fabric material or even for breeches. Wal Mart I've found