Kate Middleton appeared to make a heartfelt tribute to the Queen during her latest appearance.The Duchess of Cambridge, 39, was the picture of festivities as she donned a red coat dress by designer Catherine Walker for the Together at Christmas carol service on Wednesday. Organised with her husband Prince William, the Duke of Cambridge, also 39, the royal couple delivered a truly festive evening as they hosted the event, which was attended by various invitees and celebrities.