Where does Valentino Garavani and other famous designers get their Fabrics FROM?

They commission the fabric, and it is made by factories to their specifications. If you are interested in the overruns, then contact Mood fabrics in New York. I can purchase designer overruns at a good fabric store. Mind you they might be $125 a yard, and no, you will not find them at Jo ann's. what they have in the bargain bin, are just what they bought up from factories or mills that went out of business. The other fabrics they have are polyester. Go to fabric.com, and look up designer fabrics. I am crazy for fabrics and take online courses and make my own clothing.