When she announced she had finished chemotherapy in September, Kensington Palace only confirmed two engagements for the Princess for the rest of the year: today's service, and her annual Christmas Carol service at Westminster Abbey in December. No date has been announced yet for the Christmas event.

Kate's husband William, who is heir to the throne, said during a visit to South Africa last week that the past year had probably been the "hardest" of his life after Kate and his