The answer is simple: a suit – a shirt, that is. Not a suit made out of a woolen material (as seen in the 1920s) with a double seam, that would have been more in-your-face, and certainly not a suit made of silk, cotton and wool. For that it was the suit of the era: it was what was worn by every man on the streets.
As mentioned, the most stylish way to put on a suit and tie was to order in a tailor, who would cut the cloth into a standard-sized hem for your coat. This cut would be made according to the waist you were wearing your shirt in. In the 1920s, you could probably order as many as five coats, for example, because your shirt might be three sizes bigger or smaller than your jacket.
And what were the most trendy things to wear in the streets? You can think of them as part of the era’s dress code. The most fashionable thing to wear in the 1920s was to have a pair of black shoes. (As mentioned in this question, black shoes were seen as the opposite of a suit in that they did not have the same sort of seam-sewn lining as a suit did).
If you wanted to go out dancing with a girl, you could do so in a white gown, with a black cravat on top. (This style would have been worn, again, to be a woman’s dress). Or, you could opt for a brown dress; this was still very much seen as fashionable in the 1920s, and was not even considered a “suit”, despite the fact that men often wore the same sort of black cravat.
A black button-down shirt would have been worn by men, but a straight-line black pin-stripe shirt would have been seen as the most conservative clothing option.
So now that you have a basic picture of what was seen on the streets, what do you think about these items? Did they give society a bit of extra spice to complement the clothes of the time? In some cases they seemed to; in others, they seemed like a little thing to add some extra flair, or at least not too much. But whatever their purpose, these items were still fashionable in the 1920s and 1930s.
In fact, some of the most popular items of attire were the suits. Many men would wear them for the entire day, even on holiday, as the shirts worn
vintage flapper dress plus size, flapper dress pattern mccalls, 1920s gatsby flapper dress, diy flapper dress placing frings, flapper dresses on amazon