Kate, 42, had bravely persevered to host her fourth annual service after her toughest year yet, in which she underwent preventative chemotherapy for cancer.
The Princess of Wales was a sight to behold alongside Prince William, their children Prince Louis, six, Princess Charlotte, nine, and Prince George, 11, as well as other members of the Royal Family
Laura Warshauer, who was placed in the same halls as Kate during their time at the University of St Andrews, delighted fans when she shared an unseen snap of the royal during her student days.
Kate, 42, hosted her fourth concert at Westminster Abbey in the heart of London at the start of this month - but details of the service itself have been kept tightly under wraps.