It's a pretty big step for the royal couple - it will be their first tour with their son - so Queen Elizabeth herself has been advising the Duchess of Cambridge on how to charm the crowds.
The Express reports: "Most importantly, the Queen can pass on her knowledge of the countries, their cultures, histories and the dos and donts of what to say and not say."
Kate, Wills and Prince George on tour together Down Under can only be a good thing. We just can't wait to see the pics.
LOVE THE DUCHESS? Take a look through this gallery all about the royal lady herself...