What not to wear to a wedding as a male guest?

Short answer

Do not wear white, cream, or anything that could outshine the couple. Avoid jeans, trainers, and very casual sportswear unless the invitation says otherwise. Skip anything too revealing or ripped. Respect the dress code and the venue, and never wear a suit in a colour that clashes with the wedding party.

The main rule is to avoid wearing white or anything close to it, as that colour is usually reserved for the couple. Also steer clear of very casual items like jeans, tracksuits, shorts (unless it is a beach or garden party), and trainers. These can feel too relaxed for most UK weddings, even daytime ones.

Check the invitation for a dress code. If it says black tie, wear a dinner jacket. If it says lounge suit, a standard suit and tie works. If there is no code, a smart suit in navy, grey, or charcoal is always safe. Avoid bright, loud colours that might draw attention away from the wedding party, and do not wear anything ripped, stained, or overly casual.

Also think about the venue. A church or register office may have rules about hats or bare shoulders. A barn wedding may be more relaxed, but you should still look tidy. If you are unsure, ask the couple or another guest. The goal is to look polished and respectful, not to stand out.