Popsugar Fashion Red Carpet Harper's Bazaar UK Women of the Year Awards 2015 Sienna Miller Takes Home a Major Honor in a Seriously Dreamy Gown November 4, 2015 by Gemma Cartwright View On One Page Photo 2 of 12 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 2 Sienna Miller Sienna wore a Valentino gown. Previous Next Start Slideshow Red CarpetAward SeasonHarper's Bazaar