Cardy a fashion essential

Named after the 7th Earl of Cardigan in the mid-1800s, the cardigan's first true fashion outing came as part of the 1950s twinset era, in which any girl worth her stylish salt had one draped over her shoulders.

Why you need it now

Cropped cardigans are a perennial fashion favourite thanks to their ultra-feminine feel but it's longer lightweight cardis that have hit the runways. And just because it's summer doesn't mean you can't embrace the casual comfort of a fine-knit cardi, which can be dressed up or worn low-key and is just the ticket to take the chill off when the sun sets.

What to look for

Whether short or long-sleeved, neutral or bright, the lightweight cardigan is an essential you'll be reaching for time and again.

Oatmeal tones with subtle ruffles at Marni, sleeveless over sequins at Phillip Lim, simple, sleek and tucked in at Burberry or deep blue at Christopher Kane - they all have us longing to get cosy. The coolest cardis are slimline fine knits in solid colours (excluding the classic Missoni).

Think neutral tones buttoned over a shirt and tailored pants to be preppy, or belt over a silk shirt in a dazzling colour to give it an urban edge. Choose a length that sits below the thigh with buttons that begin at high waist and simply throw over mutually soft pieces to look effortlessly chic.

Minimal texture or flat knits are most flattering and drape best. Keep embellishment minimal as the cardi is a versatile classic that stands on its own.

Style to suit you

Petite shapes are appealing in a V-front cardigan, as the round neck can sometimes appear too childlike. Go for something that finishes at your thigh and to avoid being overwhelmed by a longer-line cardi, add a slim belt to create structure.

Pear shapes look ladylike in round-neck cropped sweaters that stop at the thinnest part of their torso. Beware longer cardis that cling to your bottom as they are unflattering. Make sure it is oversized and always wear it open.

Busty shapes, beware round necks as they can have a mushroom effect. A buttoned cardigan with a deep V neck works best for your shape. Belted over a shirt or blouse is best for you.

Larger frames should experiment with a V front. Wear it loose and open, push up the sleeves and add a light scarf to create layers of vertical lines. Remember, a fitted cardigan is your mortal enemy.

Tall and slim can carry longer V-front cardigans with ease. Belted or open over a same-length dress is effortlessly chic.