The Diamond Jubilee riverboat pageant on the Thames is underway and going smoothly, with over 1,000 boats making their way down the river in an extraordinary spectacle.
It's a chilly day and there is not a peep of sunshine, but the rain is holding off.
The streets of London and the riverbank are packed with crowds, undeterred by the chilly day.
Kate, on board the royal barge with William, Harry, Philip and the Queen, is wearing a gorgeous 2011 McQueen gown.