I hadn't noticed one way or another re: Trumps buttoning but if his jacket is open it is probably 'cause he is HOT!
Was talking to the Saudi guys here couple days ago and they were saying it was 28C at 4am and over 40C during the days. We were comparing to here where we FINALLY middle of the day in the sun hit 20C!!

I get your point Grandad and you'd think everybody would be suited up to the nines - BUT -and this is slightly off topic - "WE" (those of us in North America) do not have traditional costumes or outfits (for lack of another word coming to me) as does, for example Prince Phillip when he gets all duded out to appear formally in public.
Granted our military guys have uniforms to wear and they can be precise in what needs to be on them but as for the rest of us ....... what would be considered "formal wear" here? In Saudi Arabia there IS a standard of clothing. I know from the guys here that there is an escalating scale of who gets to have embroidery around the collar and down the front (grant it is white on white so you can't see it unless you get close), who gets to wear black (you'll note the King has a black over robe with gold whilst the Princes have less gold etc). The regular guys wear only white.
Same with their head gear (the ghutra). When they're wearing it formally it flows freely BUT you'll also see the guys with it tucked into the black gutra (the black band) in various ways to look sporty (and to keep cool and to keep it away from their face).
Anyway - my point is those of us here in Canada & USA don't really have traditional attire to wear when we're out formally
