The Duchess of Cambridge wore a nude-coloured lace dress by Alexander McQueen, the same label she chose for her wedding day and for Sunday's river pageant.
Her hat was designed by Jane Taylor.
An investigation has been launched into how unpaid workers bussed into London for the Diamond Jubilee celebrations were left stranded.
The Archbishop of Canterbury Rowan Williams spoke of the Queen's lifelong dedication to her people, her country and the commonwealth.
The Queen has a packed schedule on the final - and climactic - day of the Diamond Jubilee weekend.