Sienna Miller

Miller's street photographs of 2004 and 2005, coin belts slung over tiered skirts, sheepskin boots, peasant blouses and oversized sunglasses, made "boho" the dominant British look of the mid-2000s, copied by high-street chains within weeks. Her later off-duty dressing moved to vintage denim, Chloé-style blouses and men's jackets, but that early run is still the most cited example of street style setting a trend on its own.