When it comes to fashion, elegance and grace, Britain's royal favorite and Duchess of Cambridge Kate Middleton never fails to impress her admirers.

At the recent 'Order of the Garter' service at Windsor Castle on Monday, the 29-year old looked stunning in a mid-sized Philip Treacy headpiece perched in a slating manner on her open hair along with natural make-up; a look often referred to as the Duchess' signature style.

Her light blue-grey dress was complimented with a matching coat, giving her a regal and elegant look.

Over 6,000 people were present to watch the pageantry of the Order of the Garter service. Founded in 1348, the Order of the Garter is the most senior and the oldest British Order of Chivalry. The Order, consisting of the King and twenty-five knights, honors those who have held public office, who have contributed in a particular way to national life or who have served the Sovereign personally.

At the service, every knight is required to display a banner of his arms in the Chapel, together with a helmet, crest and sword and an enamelled stallplate. Upon his death, these are returned back to the Sovereign.

Check out the pictures of the 'Order of the Garter' service and Duchess' signature style below:

Kate and Charles sit together at the Order of the Garter Service
Britain's Catherine, Duchess of Cambridge (L), sits next to her husband Prince William as they leave the Order of the Garter service at St. George's chapel inside the grounds of Windsor Castle, in Windsor, southern England, June 13, 2011. Reuters.
The Duchess of Cambridge and the Duchess of Cornwall
Catherine, Duchess of Cambridge chats with Camilla, Duchess of Cornwall (L) during the procession pass of the Order of The Garter Service in Windsor, England June 13, 2011. Reuters.
Kate Middleton and Camilla share a laugh
Catherine, Duchess of Cambridge chats with Camilla, Duchess of Cornwall (L) during the procession pass of the Order of The Garter Service in Windsor, England June 13, 2011. Reuters.
Kate rides a chariot with members of the Royal Family
Catherine, Duchess of Cambridge leaves the Garter Service in a carriage at St George's Chapel in Windsor Castle in Windsor June 13, 2011. Reuters.
Kate Middleton in signature style at Order of the Garter service.
Catherine, Duchess of Cambridge watches the procession pass at the Order of The Garter Service in Windsor, England June 13, 2011. Reuters.
The Duchess of Cambridge smiles as she greets simpletons
Catherine, Duchess of Cambridge watches the procession pass at the Order of The Garter Service in Windsor, England June 13, 2011. Reuters.
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