Philip in Royal Prayers

Kate, Harry and William join Queen at formal Jubilee service

Britain's Queen Elizabeth II (R) follows the Sword of State carried into St Paul's Cathedral for a national service of thanksgiving for the Queen?s Diamond Jubilee in London on June 5, 2012. Britain's Queen Elizabeth II wraps up four days of diamond jubilee celebrations with a thanksgiving service and ceremonial carriage procession in London, a formal contrast to the spectacular pop tribute staged outside Buckingham Palace the day before. AFP PHOTO / POOL / JEFF J MITCHELL (Photo credit should read JEFF J MITCHELL/AFP/GettyImages) — JEFF J MITCHELL/AFP/GettyImages

The Queen was without Philip by her side as she attended a formal Jubilee service of thanksgiving at St Paul's Cathedral in London today.

Philip is still in hospital, battling a bladder infection.

Catherine, Dutchess of Cambridge (L) and Prince William arrive at St Paul's Cathedral during the Queen?s Diamond Jubilee in London on June 5, 2012. Britain's Queen Elizabeth II wraps up four days of diamond jubilee celebrations and festivities will conclude with a ceremonial carriage procession in London, a formal contrast to the spectacular pop tribute staged outside Buckingham Palace the day before. AFP PHOTO / IAN KINGTON (Photo credit should read IAN KINGTON/AFP/GettyImages) — IAN KINGTON/AFP/GettyImages

In his address, the Archbishop of Canterbury spoke of the 'thoughts and prayers' of the nation beign with Philip.

Catherine, Dutchess of Cambridge (L) smiles as she arrives at St Paul's Cathedral during the Queen?s Diamond Jubilee in London on June 5, 2012. Britain's Queen Elizabeth II wraps up four days of diamond jubilee celebrations and festivities will conclude with a ceremonial carriage procession in London, a formal contrast to the spectacular pop tribute staged outside Buckingham Palace the day before. AFP PHOTO / BEN STANSALL (Photo credit should read BEN STANSALL/AFP/GettyImages) — BEN STANSALL/AFP/GettyImages

In his place in the Queen's glass-sided Bentley was the Queen's lady-in-waiting Lady Farnham.
Flag-waving crowds lining the streets cheered and broke into impromptu renditions of God Save The Queen as the monarch passed.

LONDON, ENGLAND - JUNE 05: Catherine, Duchess of Cambridge arrives at St Paul's Cathedral for a service of thanksgiving on June 5, 2012 in London, England. For only the second time in its history the UK celebrates the Diamond Jubilee of a monarch. Her Majesty Queen Elizabeth II celebrates the 60th anniversary of her ascension to the throne. Thousands of wellwishers from around the world have flocked to London to witness the spectacle of the weekend's celebrations. (Photo by Tim Hales - WPA Pool /Getty Images) — Tim Hales - WPA Pool /Getty Images

The Duchess of Cambridge looked stunning in a nude lace dress by Alexander McQueen.

Kate wore the dress, with a matching hat by Jane Taylor, a milliner fast becoming a favourite and nude LK Bennett heels (of course).

Prince Harry arrives at St Paul's Cathedral for National Service of Thanksgiving to celebrate the Queen?s Diamond Jubilee in London on June 5, 2012. Britain's Queen Elizabeth II wraps up four days of diamond jubilee celebrations and festivities will conclude with a ceremonial carriage procession in London, a formal contrast to the spectacular pop tribute staged outside Buckingham Palace the day before. AFP PHOTO / IAN KINGTON (Photo credit should read IAN KINGTON/AFP/GettyImages) — IAN KINGTON/AFP/GettyImages

It was the third time she has worn an Alexander McQueen piece this weekend.

The Royals are due for lunch at the Palace of Westminster shortly, after which there will be a carriage ride back to Buckingham Palace.

Weather permitting, there will then be an RAF flypast and balcony appearance.