If you invest in one thing this season, make it a cleverly cut trouser suit. Formal and fashionable, a wool jacket and pants will work harder with your wardrobe than any other piece. But don’t be afraid to try a modern mix of textures, prints and proportions. On more dressed down days, why not experiment with adding some denim. A panelled maxi skirt gives a much-needed update to your everyday essentials and is a fashion-forward alternative to jeans.