In an age of ever more casual dressing, in which business dress is more relaxed and the sartorial line between work and play blurred, it’s tempting to conclude that formal attire is less and less relevant. The direction of dressing is decidedly down rather than up. At least, up to a point – the point where proper dressing up, well beyond ‘smart casual‘, is still required. These occasions – be it a wedding or a job interview – may be few and far between, but that doesn’t mean you can rock up in a T-shirt and trainers. The very word – formal, as in formula – gives it away. They may be more open to interpretation, but rules are still rules, and respect – for other people, for the conventions of the situation – is respect. Here are some guidelines and diktats all modern men should try to adhere when dressing up in 2026. Do: Get Fitted Whatever you’re wearing formally, make sure it fits properly. Ready-to-wear tailoring comes in standard sizing, much as any …