The royal trio disembarked from their special RAAF plane at around 2.35pm and were met on the tarmac by new Governor-General Sir Peter Cosgrove, Governor of NSW Marie Bashir and Prime Minister Tony Abbott.
Kate looked stunning, as usual, in a bright yellow Roksanda Ilincic dress, while George was absolutely adorable in a tiny white outfit.
George will head straight to Admiralty House with his nanny while William and Kate will spend the afternoon at the Sydney Opera House where they will attend an official reception for young people excelling in the arts, sport, volunteering, health and education.
They will then meet members of the public on the Man o’War steps before embarking a police boat to travel to Admiralty House for the evening.
Tomorrow, the Duke and Duchess will travel to the Blue Mountains.
William and Kate enjoying Sydney’s magnificent harbour.
William, Kate and George disembarking from their plane.
The royal trio seemed glad to have finally found some sunshine after days of rain in New Zealand.
Kate looked lovely in a bright yellow dress.
William, Kate and George accepting flowers from Joscelyn Sweeney, 22, who has Down syndrome. Joscelyn also gave the royals a Snugglepot and Cuddlepie book for Prince George, who she described as “cute”.
Governor-General Peter Cosgrove’s wife Lynn was besotted with little George.
Kate’s dress was chosen because it’s “Aussie gold”.
Kate’s dress showed off her trim figure to perfection.
William and Kate posing in front of the Sydney Harbour Bridge.
“Australia is an inspiring place, as this amazing Opera House shows so vividly, and I know that a truly unforgettable few days lie ahead,” the Duke said.
“The affection that my grandmother The Queen has for this nation is infectious,” William said.
William joked George’s first word might be “bilby” but “only because ‘koala’ is harder to say”.
“Catherine and I were very grateful for the many kind messages and gifts from across the country that we received when George was born,” William said.
Kate en route the Opera House.
William and Kate arriving at the Opera House.
Fans queued from dawn for the chance to see the royals.
George’s nanny holding his adorable little kangaroo backpack.
William, Kate and baby George boarding their RAAF plane in New Zealand.
William carried his son, who seemed to be in rather a grumpy mood.
The couple thanked officials for their enjoyable 10-day tour.
The couple have had a great time in New Zealand, but haven’t had much luck with the weather.
The royal plane taking off en route to Australia.
George was very dashingly dressed on departure from New Zealand.