In September, the Duchess of Sussex hosted a very special luncheon at Kensington Palace to celebrate the launch of her charity cookbook, Together: Our Community Cookbook. For the occasion, she wore a demure pleated skirt by Misha Nonoo, which she paired with a simple black turtleneck from Tuxe, a pair of black Sarah Flint pumps, and a gorgeously regal coat from Smythe.