^{True vintage clothing was produced in the era you are trying to portray, whereas retro clothing looks like it’s from that era but was made more recently. Retro is a copy of the real thing produced in mass market, whereas vintage is the real thing. If your clothing was made before the eighties, check for the “Made in the USA” seal or whatever country you are situated in. On the tag there should be a union name and ID number. A tag that says “Made in China” is a sign that the article of clothing is not vintage.}
I just tried this dress on to check the size and see how it fits. It's so lovely! The fabric is lightweight, super soft and very sophisticated. The collar has just the right amount of stiffness so it stands up on it's own and the gathering coming down from the collar is a lovely detail. The bodice is quite fitted but comfortable as the fabric has a bit of stretch. I'm 91/71/94 and the size 8 fit me perfectly.  Overall it's a lovely dress and great value for the price.
The term pin-up may refer to drawings, paintings, and other illustrations as well as photographs (see the list of pin-up artists). The term was first attested to in English in 1941;[2] however, the practice is documented back at least to the 1890s. Pin-up images could be cut out of magazines or newspapers, or on a postcard or lithograph. Such pictures often appear on walls, desks, or calendars. Posters of pin-ups were mass-produced, and became popular from the mid-20th century.
Read my article Sammy Davis, for complete details, but no fashion designer had more influence on the 1950s fashion than Christian Dior. His influence can be seen in the A-line dress that he introduced in the spring of 1955. Until that point, women had worn fashions with tightly nipped-in waist and broad shoulders. The A-line was seen as radical because of its narrow shoulders, elongated waistline and trumpet-like flared hemline. Take a look at this vintage A-line dress from Rose Wholesale (@rosewholesale_official) to create this look for yourself.