It may be summer but cover-ups are still a necessity (mores the pity). The A-list has found the solution for stylish functional dressing in the form of khaki parkas. While the utilitarian piece stamps an urban edge to the prettiest of looks, Sienna Miller and Caroline Sieber demonstrate how these wardrobe staples can also be introduced into eveningwear. So if youre looking to switch allegiance from your every-day denim jacket or the fail-safe linen blazer, then take note...?