The Easy Suit
BoggiCoach

Here are the rules for office-appropriate double denim: Firstly, keep your separates dark. Secondly, keep their silhouettes sharp. Casual Fridays, sorted.

Denim blazer, cotton shirt, denim jeans, cotton tie and linen pocket square, from Boggi Milano. Leather sneakers, from Coach.

Keep It Clean
Hackett

What makes jeans such a perennial classic? The fact that it goes with just about everything – as long as the fit is on point and outlandish details are kept to a minimum.

Silk blazer, wool pullover, cotton shirt, denim jeans and silk tie, from Hackett.

Well-Worn
Hugo

Some denim purists believe that jeans should be naturally aged over time. We have no objection, though, to a little distressing that gives denim that worn-in look from the get-go. The key words here: a little.

Cotton blazer, cotton shirt and denim jeans, from Hugo.

Cover Star
RalphLaurenCoach

Denim jackets have come a long way since their acid-washed, patch-covered days. In a dark wash and a slim cut, it smartly spiffs up potentially personality-free chinos.

Denim jacket, cotton shirt, cotton trousers and silk tie, from Polo Ralph Lauren. Leather sneakers and leather bag, from Coach.

Grey Matter
Zegna

To look put together without too much thought, you can’t go wrong with mixing shades of a single colour. Here, grey jeans complete a tone-on-tone ensemble with ease.

Techmerino blazer, cotton shirt, denim jeans and Techmerino sneakers, from Z Zegna.