1970's Vintage Lane Bryant Polkadot Button Down Top

Someone must have had this in a vault! it's in perfect condition! The tag is the only thing that looks "worn" Classic 70' collar, button down, pleated chest from armpit, in a fun Polkadot print 100% poly Tag says 38 which would be a large but I think medium to large. It will be more fitted on a large frame. 20" Armpit to Armpit laying flat 24" shoulder to hem vintage, boho, Polka dot, 1970s, mod, J108