Vintage 50s Barbizon slip dress light blue

Vintage size 18 miss — slip by Barbizon — I see no flaws — I normally don’t source vintage, but came across this pretty vintage piece and thought it’s so pretty & belongs in a Poshers closet 1940s-1950s blue White lace accents Plissé ruffle hem Adjustable straps metal side zipper fitted bodice sweetheart neckline closer to a modern day size 6 imo, being vintage we need to use measurements provided below to decide for personal fit. Laid flat approx measures: 19” across chest at underarms, 16.5” across waist area, 43” length