The coronation outfits of Catherine, Princess of Wales, have been a sight to behold across the entirety of the weekend of celebrations. From the striking cobalt Self-Portrait dress she wore to welcome world leaders to a pre-coronation reception held at Buckingham Palace to her stunning ivory Alexander McQueen gown and ceremonial robe she wore to the coronation itself, Kate Middleton’s ensembles have been worthy of the history books they’ll no doubt grace the pages of. And tonight, as she, her husband, Prince William, their children, Prince George and Princess Charlotte, and other members of the Royal Family join members of the public for a very special coronation concert held on the grounds of Windsor Castle, Kate has wowed us with her attire once again. This time, she was wearing the key color trend of the season.