What should never wear as a wedding guest?

Short answer

Never wear white, ivory, or cream, as these are reserved for the couple. Also avoid anything too casual like jeans, trainers, or sportswear unless the invitation explicitly says so. Do not wear anything that is too revealing, too short, or too tight. Respect the venue and the couple's wishes.

The biggest no-no is wearing white or any shade that could be mistaken for white, such as ivory, champagne, or very pale pastels. This applies to all guests, regardless of gender. It can look like you are trying to upstage the couple, and it is a common source of upset.

Avoid overly casual clothing. Jeans, tracksuits, football shirts, and trainers are not appropriate for most weddings, even relaxed ones. If the invitation says smart casual, that still means a jacket or a smart shirt, not loungewear. Also avoid anything ripped, faded, or with large logos.

Do not wear anything too revealing, such as very short dresses, low-cut tops, or see-through fabrics. You want to feel comfortable, but you also want to respect the occasion and the venue. Some religious buildings have dress codes, so check ahead if you are unsure.

Finally, do not wear anything that might clash with the wedding party's colours, especially if you know what they are. The day is about the couple, not about your outfit. When in doubt, choose something classic and understated.