Nicholas, you know me TOO well!
Gruto, your discourse is like that of Marx: if you accept the premises, you can’t disagree with the conclusions.
However, I believe a syllogism saying that
Dressing is useful
Art is not useful (I disagree with “useless” – maybe for those who can’t make out what art is)
ergo Dressing is not art
is little more than a (not very artfully dressed) sophism. The fact of being or not useful (and in what way? and what for? and for whom? and in what context?) is not an intrinsic quality of art – there is useful art (a designer chair) and there are useless practical objects.
I agree with the Japanese who, as far as I know, traditionally make no distinction between “major arts” and “minor arts”. Ikebana is just as much an “art” as painting. Because art is about HOW you do things – not about the result, or about its usefulness. Etymologically speaking, “art” has in its roots “(practical) skill” (old French), “craft” (Latin), “manner, mode” (Sanskrit AND German “Art”, rather than “Kunst”) -
http://www.etymonline.com/index.php?term=art
Therefore, there can be just as much art in cooking or tailoring and just as little in sculpting or singing “artlessly”.
Dressing can be an art, if practised as such. While covering one’s body to protect it from the elements (or shame) may be useful or practical, “dressing” goes beyond that necessity and can become art.
Style, in the LL acception, is not about art, it is about discovering oneself and letting that discovery find expression. Style is not about dressing prettily, not about having bespoke suits made, not about wearing silk ties. It is not a skill (craft) to be taught, either. It is simply (?) being oneself. That is why it is the most difficult thing in life and we keep looking for explanations, systems, philosophies etc. just to avoid having to face that simple truth.
Oh – and dress can also be ugly, disturbing and alarming AND useless, and still not qualify as art.