What is the proper dress code for a wedding?

Short answer

The proper dress code is whatever the couple has written on your invitation, and it tells you how formal the day will be. If no code is given, aim for smart, respectful clothes that suit the venue and time of day.

Look at the wording on the invitation first. Phrases like black tie, morning dress, cocktail or smart casual each mean something specific. Black tie usually means a long gown or a suit with a bow tie for guests. Morning dress calls for a suit and tie, often with a waistcoat. Cocktail sits in between, with a knee-length or midi dress or a suit without a tie. Smart casual is more relaxed but still tidy.

If there is no code at all, match your outfit to the venue and time. A daytime church wedding calls for a dress or suit that is neat and modest. An evening reception in a hotel or barn allows something a little dressier. Consider the weather and how much standing or dancing you will do.

Choose comfortable shoes you can stand and dance in.
Layer up for churches and outdoor venues, which can be chilly.
When in doubt, it is better to be slightly overdressed than underdressed.

Some religious buildings ask guests to cover their shoulders or remove hats. The rules can vary, so check with the register office or the place of worship if you are unsure.