Whatever the dress code, and whether you’re the groom or just a guest, a big day is a great reason to order a bespoke suit.
The most formal look is a full morning suit: long coat in black or grey, waistcoat and striped trousers. One notch down is a regular lounge suit, although it’s best if it doesn’t look like something you normally wear to the office.
Finally, and particularly if the wedding is somewhere warm, a linen suit feels more casual and keeps you cooler. This could be in a brave pastel shade, a la Miami Vice, or it could be in a sober navy; either way it’ll let you breathe and feel relaxed.