Circa 1960s. Size 44. Brand is Sofinyl.
This one takes us straaaight to the 60s! Psychedelic flower power! It's a bit of a trip to stare at her for too long. No stretch to the fabric. 100% Polyamide. 
 
Flat-Lay Dimensions:
Shoulder to shoulder - 15"
Armpit to armpit - 20.5"
Bust - 20"
Bottom Width - 23"
Top to Bottom - 41"