You may have never heard the word 'ombre' before but it's about to become a key word of your fashion vocabulary (and you'll probably be sick of it by February). It's already featured on the catwalks at Prada, Louis Vuitton, and to Jonathan Saunders to name but a few. It's especially big news for handbags as it moves patent in to next season. Unsurprisingly, the first High Street store to get on board ...