Quote Originally Posted by Mark Keney
If I am just attending a wedding I wear what I want.
I'm going to have to both agree and disagree.

As long as the outfit matches the requested level of formality, it should be fine - I believe the bride is being unreasonable in this case.

However, I also think that a goodly number of wedding guests these days are very inappropriately informal in their dress - showing up in dirty sneakers, torn jeans, and a T-shirt is rude, I think, where even making the effort for slacks, a dress shirt, and a tie would be minimal.