Quote:
Originally Posted by
johnvw 
Will I get a response to this question?
First of all, lapel styles, silk facings, vents, and the number of buttons don't go toward a jacket's structure. After all, regardless of such details, a dinner jacket will be fitted and put together the same way a suit jacket would be. This includes the buttoning point. Your tailor will probably anchor all your single-breasted jackets at the same buttoning point, regardless of whether each is a one-button, two-button, or three-button jacket. Put another way, the buttoning point on a single-button dinner jacket should be at the same place as the buttoning point on a 3-roll-2 odd jacket, when made by the same tailor for the same client.
Second, and more importantly, aside from facings, all of those details can be found on lounge suits and are not exclusive to dinner jackets. If I ordered a black, peak-lapeled, single-button, ventless lounge suit, I could easily have it converted into a dinner suit later on by adding facings.
This was not meant to be an exercise in semantics. The important takeaway point is that a dinner suit and lounge suit are fundamentally the same in most ways, and minus certain surface details, would be indistinguishable from each other.
Quote:
Originally Posted by
johnvw 
I meant, will I get a response from Mafoofan, but thank you for your post. This is a good answer as far as going into detail. However, my original point stands. If a suit jacket is "almost the same" as a dinner jacket, except for differences A, B, C, and D, then the two are
not "almost the same"; there are fundamental differences.
Again, this was not meant to be a matter of semantics. But if you want to get into it, "almost" is a key modifier.