60’s Pale Blue Rose Pillbox Hat plain minimalist I'm guessing this would fit

I'm guessing this would fit a Small or perhaps a Medium (the mannequin is a 6/8)

Labeled on the inside with Brigitte Body Made in Italy

Size: 6 (petite)

Shoulder-to-shoulder: 17"

fits like a size Medium

60’s Pale Blue Rose Pillbox Hat plain minimalist I'm guessing this would fitFrom the 1960's, pale blue linen fabric deep crown pillbox. Seamed crown, slightly indented. Front holds a large blue silk rose. Interior is finished with a pale twill fabric and the standard petersham ribbon. Excellent condition with only a little makeup staining on the interior ribbon which I have photographed. Inner circumference is 22 inches with a rise of 3 3 4 inches. Measuring on the outside, side to side is 14 1 2 inches. Feel free to ask