M&S X Sienna Miller Women's Wool-Blend Double-Breasted Blazer - 10 - Ivory
Back to where it all began, with the wool-blend suit - Sienna's love of winter white was the starting point for the entire collection. A counter-intuitive colour for the season, but a beacon for sophistication and luxury. The double-breasted blazer is an icon of masculine tailoring, with its cut-away front detail, revere collar and full lining that wouldn't look out of place on Savile Row. Team with the matching trousers and waistcoat for the full effect.