I raised the question because I've seen very many photos of American weddings over the past few years, the vast majority of which have clearly taken place during the daytime (I know evening weddings are also common in the US. I don't believe they happen at all across the UK, with the exception of Scotland), and also have the men in black tie...
Black tie during daytime weddings, that's an interesting new phenomenon. I would speculate that it might have to do with an easier accessibility of dinner clothes compared to morning dress, but who knows.
I didn't know about evening weddings in Scotland! Maybe that's where the Americans got it from?
Anyhow.... my point is that for the average man in the UK nowadays to wear a lounge suit to get married, and especially just to go and watch somebody else get married, is much more formal, relative to the day to day norm, than it would have been in the days when you wore a lounge suit to these things because that was simply your clothes, what you wore. For many folks back then it must have been the equivalent of wearing your nice, new jeans that you keep for going clubbing. Which is not a slight, merely an observation that perhaps increasing casualization isn't hitting every social occasion as hard as we tend to think sometimes. [huh]
I agree with your point about the perceived higher formality of today's weddings.
I would argue that it's the increasing casualization that causes today's weddings to be so often held in just lounge suits for both groom and guests. Being accustomed to the sight of people who either don't wear suits at all or, if they do, who look like they'd rather be wearing something else, a solid navy suit with white shirt and a wedding tie does look dressed up very prettily - and I would be the last to oppose that notion. In fact, someone who is attuned to current fashions might be inclined to think of any more formal clothing as being too stiff or too outdated for a such an occasion.
I understand what you mean. I suspect the difference is that, subconsciously, albeit that there is still more room for manoeuvre than with white tie, we still tend to think of black tie as a form of 'uniform', where the purpose is to blend in rather than stand out. Hence wearing white tie when everyone is in black tie would be a bit of a faux pas, whereas casual occasions tend to be "wear what you like", so if what you like is a lounge suit....
The psychology of clothing is fascinating, isn't it?
It certainly is! The relative freedom of black tie dress code does allow for a lot of variation in the degree of formality. To me as the wearer - rather than the other guests who usually don't know the difference - wearing a shawl collar DB instead of a peak lapel DB or a three-piece can make all the difference if I feel that I still blend in, in a vintage-biased sort of way, admittedly.