I bought this blouse 2nd hand several years ago. It has some minor yellowing (visible to the eye in person, but light enough that I can't photograph it), but is otherwise in great shape as far as I can tell. The tag says it's a size small. There is a ribbon in the back to take in the waist if needed.

Here are my amateur flat measurements:
Length (shoulder to hem): 51 cm
Sleeve opening: 13 cm
Bust (armpit to armpit): 41 cm
Waist: 39 cm

Please feel free to message me!