DO add a pop of statement-making scarlet to your look á la Rachel Bilson in Roberto Cavalli – a ruby clutch or pair of heels is an instant style updater.
...but DON’T stop there: blocks of bold, bright reds are also in, as seen on Claudia Schiffer at Paris Fashion Week and the Julien Macdonald and Isabel Marant catwalks.
...and DO take a walk on the wild side by wearing this print head-to-toe, too. Start with a monochrome dress like Fearne’s, a classic leopard faux fur coat or animal print tights.
DON’T pack last season’s lace away just yet, as this trend’s still going strong. Gothic and romantic, we heart delicate, cobwebby dresses like Jessica Stroup’s.
DO use a simple belt to give your outfit a 2010 spin: make like Daisy Lowe and either knot it or twist the end under the buckle. Great 2 second trick!
But DON’T forget to keep it skinny, like Claudia Schiffer – it’s the only size of waist-cincher we’ll be wearing this winter.
DO get your hands on an aviator or shearling jacket like Nicola Roberts, pronto. It’s officially THE jacket shape of the season – and they’re unbelievably warm.
...or style your floor-sweeping skirt with rain-defying biker boots and a rock chic jacket, like Olivia Palermo. Major autumn DO.
DON’T send your florals to the back of the closet. Abstract, painterly prints like this Dolce & Gabbana number we spotted Jessica Alba wearing work well as dramatic maxi dresses, or try layering your ditsy prints with some oversized knitwear or a Barbour jacket for the English Heritage vibe.
A school-style satchel is THE handbag of winter 2010, but DON’T worry if the preppy look isn’t for you – try a fierce black leather version like Jessica Alba’s Proenza Schouler sack instead.
DON’T be restricted by sleeves! Keep out the chills in fashion’s cosiest new coat shape – the cape – like Lily Allen in Louis Vuitton.
DO make your own Mad Men tribute in retro, 50s shapes, like Alexa Chung’s full, swishing Louis Vuitton skirt and tucked in blouse.
DO embrace the great outdoors in countryside favourites like tweeds, plaids, sheepskins and wool to nail the heritage look. Try a padded Barbour jacket like the one we snapped <a href=”http://www.glamourmagazine.co.uk/dos-and-donts/style-and-fashion/2010/09/09/holly-willoughby-on-the-street-in-london” target=”_new”>Holly Willoughby</a> wearing, or go for classic English staples like Nicola Roberts' leather gloves and Luella coat.
DON’T like the look of maxi styles? Retro shapes not your thing? Make fashion your friend in the season’s other favourite: the pencil skirt, like Dita Von Teese. Feminine, totally hot right now and a trend that’s even suitable for work.
...and DON’T think minimalism ends at blazers. As well as cigarette pants and shift dresses, the classic camel coat made a comeback, too, as modelled by Lily.