PHOTOS: Kate Middleton's Many, Many Stylish Hats

(Reuters)

Attending the wedding of Laura Parker Bowles and Harry Lopes at St Cyriac's Church in Lacock, in Wiltshire, west England. (Reuters)

Attending the Sovereign's Parade at the Royal Military Academy in Sandhurst, southern England. (Reuters)

Arriving for the wedding between Zara Phillips, the eldest granddaughter of Queen Elizabeth, and England rugby captain Mike Tindall, at Canongate Kirk in Edinburgh, Scotland. (Reuters)

Attending a Christmas Day service at St Mary Magdalene Church on the Royal estate at Sandringham, Norfolk in east England. (Reuters)

Presenting shamrocks to the Irish Guards at a St Patrick's Day parade. (Reuters)

Attending a garden party at Buckingham Palace. (Reuters)

Leaving after a thanksgiving service to mark the Queen's Diamond Jubilee St Paul's Cathedral in central London. (Reuters)

Traveling to the Horse Guards Parade in London. (Reuters)

Attending the annual Order of the Garter Service at St George's Chapel. (Reuters)

Smiling during a visit with her husband, Prince William, to attend a St Patrick's Day Parade. (Reuters)

Attending a naming ceremony for the 'Royal Princess' cruise ship. (Reuters)

Participating in her son's christening at St James's Palace. (Reuters)

Attending Order of the Garter Service at St George's Chapel. (Reuters)

Attending a Naming Ceremony and Service of Dedication for the Royal National Lifeboat Institution's (RNLI) new Atlantic 85 Lifeboat. (Reuters)

Standing on the balcony of the Royal box before the Derby at Epsom Racecourse in southern England. (Reuters)

Smiling as she rides to Buckingham Palace after attending the Trooping the Colour ceremony in central London. (Reuters)

Leaving St. George's Chapel. (Reuters)

Attending medal presentation ceremony. (Reuters)

Arriving to a citizenship ceremony at the Canadian Museum of Civilization in Hull, Quebec near Ottawa. (Reuters)

Adjusting her cowboy hat in Canada. (Reuters)