
The Duchess of Cambridge was all smiles today as she took part in the Garter Day celebrations.
Despite her heavy schedule of late, Catherine remained bright and fresh-faced as she showed off her third hat in as many days.
Waving from a carriage at Windsor Castle, the radiant newlywed wore a Philip Treacy head-piece, matched with a light blue-grey dress and matching coat.
Earlier, the Queen, Prince William and other members of the Royal Family took part in the annual Order of the Garter service.
The Garter Knights wore lavish blue velvet robes and black velvet hats with white plumes in a colourful spectacle that attracted hundreds to the ceremony held at St George's Chapel.
New appointments are announced on St George's Day but the chivalric and installation ceremonies take place every year on the Monday of Royal Ascot week, known as Garter Day.

Ceremony: Catherine, Prince William, Prince Charles and Camilla rode a carriage as fans waved flags
Two new Knights - Lord Phillips of Worth Matravers, the president of the Supreme Court, and Admiral Lord Boyce, a former head of the UK's Armed Forces, - will be invested in the Castle's Garter Throne Room then 'installed' during the service.
Lord Phillips, Britain's most senior judge, is the first president of the Supreme Court, the UK's highest court, which was officially opened by the Queen in October 2009.

Admiral Lord Boyce, ex-Chief of the Defence Staff, was head of the Armed Forces at the time of the Iraq invasion in 2003, retiring later that year and he now sits as a cross-bench member of the House of Lords after being made a peer.
Recipients of the honour are chosen because they have held public office, contributed to national life or served the sovereign personally.

Ancient order: The Duke of Edinburgh, left, and Prince Andrew, Duke of York


The appointment of Knights of the Garter is in the Queen's gift and is made without consulting ministers.
Lord Phillips and Lord Boyce bring the total number of Garter Knights to 23. Other members of the order include former prime ministers Lady Thatcher and Sir John Major.
The Queen is sovereign of the order and a number of other British and foreign royals are additional members of the order.



Garter Day 2011, Windsor Castle
source: dailymail