NewsgalleryIn pictures: Prince George turns oneBookmarkShareNewsByAndrew Jackson10:58, 8 SEP 2014Updated15:36, 9 SEP 2014The Duke and Duchess of Cambridge with Prince George of Cambridge holding toy bilby at the unveiling a plaque, opening the Bilby enclosure during a visit to at Taronga Zoo in Sydney, Australia, the Duke and Duchess of Cambridge are on a three-week tour of Australia and New Zealand. (Image: Chris Jackson/PA Wire)1 of 17Royal Visit to New Zealand, April 2014. Wellington New Zealand. Prince George has arrived for his very first public engagement. The eight-month-old royal accompanied by his mother, Catherine, Duchess of Cambridge was at Government House in Wellington to attend a special playgroup arranged in his honour.2 of 17Wellington New Zealand The Duke and Duchess of Cambridge and Prince George arrive at the Military Terminal at Wellington Airport on a Royal New Zealand Air Force aircraft , to start the couple's tour of New Zealand and Australia.3 of 17The Duke and Duchess of Cambridge with Prince George depart Canberra today at the end of the couple's tour of Australia and New Zeland.4 of 17The Duke and Duchess of Cambridge with Prince George depart Canberra today at the end of the couple's tour of Australia and New Zeland5 of 17The Duke and Duchess of Cambridge arrive with Prince George at Wellington Military Terminal on the first day of their official to Australia.6 of 17Britain's Kate, the Duchess of Cambridge, holds Prince George during a visit to Plunket nurse and parents group at Government House in Wellington, New Zealand, Wednesday, April 9, 2014. Plunket is a national not-for-profit organization that provides care for children and families in New Zealand. Prince William, Kate and their son, Prince George, are on a three-week tour of New Zealand and Australia.7 of 17The Duke and Duchess of Cambridge and Prince George arrive at Sydney Kingsford Smith Airport on a Royal Australian Air Force aircraft during the tenth day of their official tour to New Zealand and Australia.8 of 17File photo dated 20/4/2013 of the Duchess of Cambridge holds Prince George of Cambridge as they look at a Bilby called George at Taronga Zoo in Sydney, Australia. Prince George first birthday is on July 22.9 of 17File photo dated 7/4/2014 of the Duchess of Cambridge arriving with Prince George at Wellington Military Terminal on the first day of their official to New Zealand.10 of 17File photo dated 20/04/2014 of Prince George holding a toy Bilby during a visit to Taronga Zoo in Australia.11 of 17This photo dated Wednesday July 2, 2014, was taken to mark Prince George's first birthday and shows the Prince during a visit to the Sensational Butterflies exhibition at the Natural History Museum, London.12 of 17File photo dated 25/4/2014 of the Duchess of Cambridge and Prince George . The Duke and Duchess of Cambridge are "very pleased to announce" that they are expecting their second child, Clarence House said.13 of 17File photo dated 20/04/2014 of the Duke and Duchess of Cambridge and Prince George of Cambridge looking at a Bilby called George at Taronga Zoo in Sydney, Australia. The Duke and Duchess of Cambridge are "very pleased to announce" that they are expecting their second child, Clarence House said.14 of 17File photo dated 23/7/2013 of the Duke and Duchess of Cambridge leave the Lindo Wing of St Mary's Hospital in London, with their newborn son, Prince George of Cambridge. The Duke and Duchess of Cambridge are "very pleased to announce" that they are expecting their second child, Clarence House said.15 of 17Photo taken by Michael Middleton, the Duchess's father in early August and supplied by Kensington Palace of the Duke and Duchess of Cambridge as they stand with their son, Prince George in the garden of the Middleton family home in Bucklebury, Berkshire. The Duke and Duchess of Cambridge are "very pleased to announce" that they are expecting their second child, Clarence House said.16 of 17File photo dated 23/10/2013 of the Duke and Duchess of Cambridge with their son Prince George arrive at Chapel Royal in St James's Palace, ahead of the christening of the three month-old Prince George of Cambridge by the Archbishop of Canterbury in central London. The Duke and Duchess of Cambridge are "very pleased to announce" that they are expecting their second child, Clarence House said.17 of 17