The countdown is on for the arrival of the Duke and Duchess of Cambridge in Central Australia on Tuesday.

He's not yet nine months old but Prince George is already trying to walk and he's not far off.

The Prince George effect was back on display today when, in one of the worst kept secrets of the royal tour, the cherubic third in line to the throne made a "surprise" appearance.

A new portrait of the Queen has been released to celebrate her 88th birthday on April 21.

His Australian tour is one of the first major public forays for the nine-month-old heir to the British throne. These are the cutest moments from Prince George's public appearances so far.

Prince George's first Australian tour appearance closed down Taronga Zoo in Sydney this morning.

There'll be a George permanently at home at Taronga Zoo's Prince George Bilby Exhibit after today

The Duke and Duchess of Cambridge have taken baby Prince George on a special Royal outing to Sydney’s Taronga Zoo.

After an Easter Sunday breakfast with Prince George The Duke and Duchess of Cambridge arrived at Andrew's Cathedral by Sydney's Town Hall for a religious service attended by the church's regular parishioners.

The Duke and Duchess of Cambridge have made a secret trip to the rugby in Sydney to unwind after a busy fourth day on tour.