It was a very busy week for Pippa Middleton last week. On the promotion trail for her Party Planning book, ‘Celebrate’, on one day alone Pippa wore no less than four great looks, my favourite being the great plum dress from Roksanda Illincic. Pippa really nails this season’s berry shades in this dress, with its ladylike shape, great drape style neckline and sophisticated knee-length skirt. Berry shades, plums, purples, maroons and burgundies, are always a great choice for Autumn. Rich and warm, they flatter most hair shades and skintones, and just look great with boots and layers. There are berry shade dresses everywhere this season, in shapes and fabrics that…