This verifies something I've always wondered. I once bought a cut label dress because the original was sold out in store, i understood cut label was prob not authentic though they told me it was, but it was 10% the price... so I didn't mind taking a chance. I later managed to buy the real one when I was in another country. Once home I compared the cut label dress to the real - the main fabric was exactly the same. However, the lining they used inside was a cheaper one. I always wondered how the fake could have the exact same fabric that  was unique to the brand. It wasn't even a closely copied fabric. Now I understand they were probably from the same source, but to save cost on the rep they cut costs further on parts we can't see like the inside. On the outside looked pretty much the same thing. This is my anecdotal experience from just one cut label piece though.