Kate, 42, appeared on one of the three balconies next to Sophie, the Duchess of Edinburgh, at the ceremony. She watched as her husband Prince William, 42, and father-in-law King Charles III, 75, laid wreaths as a tribute to armed forces members who have died in duty.

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.

The Princess of Wales has joined the rest of the Royal Family in attending the annual Remembrance Sunday event in central London. Kate Middleton is gradually returning to public duties following her retreat from the limelight to undergo chemotherapy earlier in the year.