Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge greet well-wishers at Sydney Opera House on April 16. Picture: Getty Images.
Prince William, Duke of Cambridge leans over the cliff as he and Catherine, Duchess of Cambridge visit the Narrow Neck Lookout and observe abseiling by the Mountain Youth Services group in the Blue Mountains on April 17. Picture: Getty Images.
Prince William, Duke of Cambridge meets with young surf lifesavers during a surf lifesaving event on Manly Beach, April 18. Picture: Getty Images.
Flanked by Chief of Air Force, Air Marshall Geoff Brown, and Commanding Officer of Number 1 Squadron , Wing Commander Stephen Chappell, Catherine, the Duchess of Cambridge, makes her way into the cockpit of a RAAF Super Hornet of 1 Squadron at the Royal Australian Airforce Base at Amberley on April 19. Picture: Getty Images.
Catherine, Duchess of Cambridge, and Prince William, Duke of Cambridge meet echidnas at Taronga Zoo on April 20. Picture: Getty Images.
Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge feed giraffes at Taronga Zoo on April 20. Picture: Getty Images.
Prince William holds Prince George of Cambridge as Catherine, Duchess of Cambridge looks on whilst meeting a bilby called George at Taronga Zoo on April 20. Picture: Getty Images.
Catherine, Duchess of Cambridge holds Prince George of Cambridge as Prince William, Duke of Cambridge looks on whilst meeting a bilby called George at Taronga Zoo on April 20. Picture: Getty Images.
Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge visit Uluru. Picture: Getty Images.
Prince William, Duke of Cambridge is presented with a gift by an Aboriginal man as they arrive at the Cultural Centre, Uluru-Kata Tjuta National Park on April 22. Picture: Getty Images.
Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge inspect a wooden snake made by Aboriginal elders during a visit to Uluru-Kata Tjuta Cultural Centre at Uluru on April 22. Picture: Getty Images.
Prince William, Duke of Cambridge touches a woman's jacket as he greets members of the crowd with his wife Catherine, Duchess of Cambridge, at the Playford Civic Centre in the Adelaide suburb of Elizabeth on April 23. Picture: Getty Images.
Prince William, Duke of Cambridge uses a spray can during his visit to a skate park in the Adelaide suburb of Elizabeth on April 23. Picture: Getty Images.
Prince William, Duke of Cambridge looks on as Catherine, Duchess of Cambridge is shown how to play on turntable decks at the youth community centre, The Northern Sound System in Elizabeth, Adelaide on April 23, 2014. Picture: Getty Images.
Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge speak to performers at the youth community centre, The Northern Sound System, in Elizabeth on April 23, 2014 in Adelaide. Picture: Getty Images.
Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge take part in a tree planting as they visit the National Arboretum on April 24 in Canberra. Picture: Getty Images.
Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge attend a dawn Anzac Day ceremony in Canberra. Picture: Getty Images.
Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge walk along the World War I Wall of Remembrance during their visit to the Australian War Memorial on Anzac Day in Canberra. Picture: Getty Images.
Catherine, Duchess of Cambridge, Prince William, Duke of Cambridge and Prince George of Cambridge leave Fairbairne Airbase, Canberra as they head back to the UK after finishing their royal visit to Australia on April 25. Picture: Getty Images.