Deborah, that is simply stunning! Ca-ching, ca-ching!!! And harem-pant jumpsuit sounds very accurate.
I think you can safely call this a lame' fabric. There are so many connotations to "lame'," but one definition is brocaded fabric with metallic threads. Then there is liquid lame--which is what I think most people think of when they hear the word. (Some think of lame' as merely a metallic thread, but it's really fabric interwoven with metallic threads throughout.)
Perhaps a "brocaded lame'" or "lame' brocade."