vintage two piece paper thin tank and coverup set

extremely thin two piece tank and coverup jacket set. i got it as part of an estate of a very well-travelled woman so it really could be from anywhere but my guess is india based on what looks like hand-dyed patterning. the shoulders have a bit of structure from a thin bit of padding (see pics). the fabric is so delicate that there are a couple of tiny holes, but no major tears or stains. tank measures 18" across the chest and 26" length. other top is about 27" pit to pit and 24" length.