Vintage Vinvert Blouse

This vintage blouse is stunning & in excellent condition for it's age. It would look amazing paired with a skirt or jeans. The tag reads "Vinvert For Tasteful Ladies By Sanyo" I do not see a size but in my opinion this fits like a medium & I will list measurements below. Also there is a hidden snap button at the chest so that it can be worn buttoned or unbuttoned. I posted a pic showing both ways. bottom of shirt laying flat: 17 1/4" pit to pit: 17 1/2" top to bottom: 20" Vintage grandmacore