70s FIESTA Dress

I pretty amazing vintage 1970s FIESTA dress!! Screaming fun !! Great condition— there is a small spot on the front chest, and and a small patch of super faint spots on front under waist as well, some discoloration on the upper back are … dress is so busy tho they are all pretty camouflaged but shown in photos after measurements Fits like a modern sz S Pics serve as part of description Seems like a cotton canvas material to me but I get nervous to identify