Vintage Iridescent Formal Maxi Dress

Brand is Chica's USA - no size listed, fits big on me as a size 4-6 so I'm assuming it's around US womens 8. See the measurements as photographed. There is no fabric details either, but I do think it's a silk dress. Beautiful iridescent sheen and unique fabric texture and colour combination (golds purples and blues). Beautiful to wear as a wedding guest or to a formal event!!! ✨