Julie, my understanding of "Lurex" has always been that it is not a fabric in and of itself. Lurex refers to the metallic threads or yarn shot through the base fabric. You can have cotton with lurex, or polyester with lurex, etc. So your dress would be a "whatever and lurex." Anything with a high content of lurex is, I think, generically referred to as lurex, but there is no lurex material as we think of material or fabric. Lame', oth, is a "yard-goods" fabric.