Would best fit a size US 4-6. 
Material has over 4 inches of stretch. Fully lined with embroidery and beading details. The skirt is mid rise and has an elastic waist. Excellent gently used vintage condition. 
31 inches around bust 
27 inches around waist of top 
27 inches around waistband of skirt (not stretched) 
Model is 5’4” for reference