So the unstructured blazer, with its lack of rigid structure, is much to be celebrated when it comes to piling on the extras. The fact that the trimmed-down interior leaves ample room for everything from a T-shirt and sweatshirt to a shirt and gilet is just spoiling us.

“Unstructured jackets are generally cut a little looser on the body and generally have a more casual look and feel,” explains celebrity stylist Phill Tarling, who has dressed the likes of Tom Hardy.

Separates in navy, black or charcoal grey are always a solid shout, but Tarling recommends mixing it up to maximise the appeal of a layered unstructured blazer. “For a sophisticated appearance, coordinate with items of a similar colour – blazers in shades of green are particularly on trend this season.”

The Cardigan

Even if you’re not into the whole ‘grandad chic’ thing, that’s no reason to force the cardigan into early retirement. As long as you leave stuffing tissues up the sleeve to the free bus pass brigade, the design can be a layering god-send.

Of course, we’re card-carrying members of the chunky cardigan appreciation society, but when it comes to layering, a light- to medium-gauge version (ideally in a temperature-regulating fabric such as Merino wool) is a far more versatile choice.

“Merino’s an active fibre – it reacts to changes in body temperature, keeping you warm on crisp autumnal days, and cool if the weather is unseasonably warm,” says the design team at Sunspel, a label celebrated as much for its knits as its sea island cotton T-shirts. “Your knit should be light enough to pull on over a T-shirt or layer under a coat when it gets colder.”

With that versatility comes a range of ways to wear the cardigan. A neutral example works well to add ballast to a shirt and tie combination when it’s not quite coat weather yet. But equally, options in a medium weight and with a shawl collar look great layered over a T-shirt or grandad collar shirt.