you can use any fabric you want IN YOUR QUILT! it is best to choose fabrics that can all be (cared for) the same...but some of us mix, regular cottons, flannels, wools, silks, linens, corduroy, denim, velvet, t-shirt knits....all in the same quilt---with great success!
pre-wash, stablize flimsy/slippery/stretchy fabrics, secure fraying edges (by zigzaging or stay-stitching) and do what you want
