"Coinciding with America's Veteran's Day, England celebrated Remembrance Sunday to commemorate the sacrifices of the armed forces. Prince William andKate Middleton attended a ceremony at the Cenotaph in London on Sunday (November 11).
While Prince William presented a memorial wreath in his military uniform and overcoat, the Duchess of Cambridge looked on in a black double-breasted coat and large wide-brimmed hat as she sang next to Sophie, the Countess of Wessex."
(SOURCE: http://celebrity-gossip.net/kate-middleton/prince-william-kate-middleton-commemorate-remembrance-sunday-758278)