1950s Christian Dior dress was purchased by the buyer of I Magnin San Francisco from Christian Dior New York. waist: 24.5" / 30" skirt length / 15" shoulders / 21.5" sleeve / 36" pit to pit chest / 36" hips // model is 24" waist / 32" chest / 33" hips

Information from a generous expert:

Spring 1951 Dior-New York Collection. It originally had a removable white pique collar (hence the internal buttons). The ad attached and included with sale states that the dress is made out of 'imported english worsted' and was available in grey or beige.