Dressed in a black double-breasted coat by designer Diane von Furstenberg - the very same one she wore to the service last year - Kate added a sombre wide-brimmed Philip Treacy hat, first seen at Prince William's passing out ceremony in 2006.
Kate Middleton joined the Countess of Wessex and Vice Admiral Timothy Laurence on a balcony at the Foreign and Commonwealth building for the service, appearing emotional as she watched the proceedings.
Meanwhile, Prince William stood behind the Queen, alongside Princess Anne, and the Duke of Edinburgh, who all laid wreaths at the memorial in Whitehall, before taking part in a two-minute silence.
The Royal British Legion head of remembrance, Helen Hill, as people gathered to honour ‘people who are aged 18-and-a-half who are veterans of recent conflicts’.
‘Once again the British public has shown its support,’ she said, noting that the number of war veterans taking part has increased by nearly 3000 in recent years.
‘The numbers are going up, not down. There are an increasing number of associations looking after the veteran community. More and more people want to participate in the activities.’
WATCH: Kate Middleton's most stylish moments…