I'm always impressed at the variety of updo styles worn by Kate Middleton and other members of the royal family, especially when hats and fascinators are involved. Crafting an on-theme hairstyle that follows the royal rules and fits underneath the various hats is a unique blend of math and science, and for her first appearance at the Armistice Day Service of Remembrance, the Princess of Wales wore a complex knotted side bun with a series of twists, turns, and swirls.

For the solemn occasion, Middleton wore a long black coatdress and angled hat, under which she tucked an updo made of a series of small buns and swirls. Her golden brown hair was swept to one side, looped, and twisted in an intricate but soft style. Two sections nearest to her face were twisted around each other and pinned near her ear, with the lengths gathered up in a thick knotted, braided swirl of hair tucked up by one ear. The hat was then placed perfectly atop the rolled portion, and she added a pair of ruby and diamond earrings.