What to wear to a wedding if no details are provided?

Use your descrimination. I'd wear what I think they would wear at a wedding.

I would normally say when in doubt, just wear a suit & tie. But if it's a casual affair, you don't want to be the only idiot in a suit. Do you know anyone else attending? Find out what they're planning on wearing. If they're not wearing suits, convince them to wear one, that way you'll be dressed appropriately and you won't be the only one.

You'll never be the only idiot in the suit because:
1) Someone else will always wear a suit
2) You can always take your jacket and tie off

That being said, I think the simplest solution is to just ask the person you know that's getting married. It's not like it's an uncomfortable/awkward question. Just shoot them an e-mail.

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Oh dear god.

Here's a novel idea: instead of asking a forum that doesn't know anyone attending the wedding, why don't you call the people that are actually getting married?

It's definitely easiest to just ask. I ran across the same issue with a wedding I'll be attending in July. There was no dress code stated so I emailed to ask them. It will save you a headache later.

Another indication is the style of invitation, and location of the reception.

Small church with the local recreation hall in the middle of no where you might be over dressed if you weren't wearing jeans.

If they've invited you to a country club on formal stationary and registered at some sort of exclusive botique, you're probably wearing something much more formal.

For god sake, just ask the organizers. Most Brides are OCD about their wedding day. You really don't want to make a wrong move.

Christ, what did people do before the internet? Wear a nice suit, shirt and tie. Treat it as the formal occasion it is.

I was in this situation before, and I wore a suit but took an odd jacket and a pair of chinos just in case. Also brought a button down collar in case I wanted to switch to smart casual. Arrived at the wedding, most were dressed smart casual. Saw a couple of suits, so figured with no loss of generality I was good to go. Wore the suit with the tie and pocket square and was happy as a clam.

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