Sienna Miller looked ridiculously smokin' at London Fashion Week, start to epic finish. But it was this outfit, worn to the Matthew Williamson show, that landed her firmly on top of the girls-whose-style-we-want-to-steal list. Understated and cool, it's a genius mix of rich jewel tones and tactile textures that works for day or - thanks to the furry stole - for big nights out, too.