Vintage “Sally Starr” Top, one size - rare?!

RARE TOP!🤩🤩Dont know much about this piece, bought vintage - worn for one photoshoot - feels amazing, maybe silk? No size tag, but model is a XS-S for reference. No staining or discolouration. looks like a rare item, cant seem to google anything about it, though Sally Starr (see last image) was a 50s era Hollywood Cowgirl and the top gives off that vibe. Montreal made. Personally love this piece. Dm to arrange free pickup/delivery in toronto. no returns/refunds **auto-untracked shipping. msg pre-purchase for tracking (+$15)