Peuan Thai Studio vintage floral kaftan maxi sun dress 100% cotton

Peuan Thai Studio (Canberra, Australia), vintage 1960s-1970s sleeveless maxi dress 100% cotton floral, yellows, orange, green Knotted buttons No size tags, measurements are approximately size L/XL: Pit to pit = 22.5 Widest point at hips laying flat = 26 Length = 47 I wear women’s 10-12 and 38 chest and fit is slightly big but comfortable where bra doesn’t show thru arm holes Has a few stains at the collar, fabric flaw below the placket, mended area and a mark near placket - see pics