We’ve broken down the best blazers and sport coats to wear this autumn, depending on how deep your pockets are and whether you like tweed, herringbone or corduroy. This traditional black blazer ... it ...

You can go for something more traditionally formal, like the herringbone option from Todd Snyder or Incotex’s sophisticated navy blazer ... it up with a dress shirt and matching pants, or ...

Kate looked straight out of a country club in a chocolate-brown herringbone ... layered the blazer over a sky-blue linen button-up from Boden. And she let the cuffs of the breezy shirt peek ...

Key items from our October issue, hand-picked by Jim Moore and available at MR PORTER Paul Smith London Slim-Fit Herringbone Blazer "You should ... it does a crisp oord shirt and slim repp tie."— ...