Vintage 70s heart ric rac peasant tshirt blouse

This adorable knit blouse was dead stock with the tags when I got it a few months ago, but I've worn it once. It says size medium, though I would say it's a size small as I'm a sz 2/4 on top (32D) and I don't think it would fit comfortably with larger shoulders. It has sweet heart shaped buttons and rick rack with red, yellow and green going around the button placket and cuffs at the elbow length sleeves. This will be so great transitioning in the fall from summer!