HOT Contrast lapels Spice up a blazer with colour-contrasting lapels. Purple-grey nails Move over taupe, this is the new shade for autumn. White and tan The colour combination of the season. Rucksacks Fashionable and practical. NOT Strappy wedges Nothing less elegant than stomping around in buckle-laden wedges. Cut-off cardigans Even J.Crew can't flog them. Boho bags You know those colourful ones you picked up on holiday and thought were chic? They're not. Denim shirt-and-leggings combo Alexa Chung may have thought she looked stylish, but we didn't.