The Prime Minister's trip to Australia is mostly about valuable face time with our Trans-Tasman neighbour.
Jacinda Ardern is spending two days in Melbourne, where she will deliver an address titled "Why Good Government Matters".
Ardern will also meet the State's Governor and Premier, attend an investor lunch and a business breakfast.
She will sit down with her Australian counterpart Scott Morrison tomorrow.
Political Editor Barry Soper told Mike Hosking the speech isn't actually that important.
"The PM’s of Australia and New Zealand have a duty to meet with each other, which is really the main reason for her trip.
"It will be her first opportunity to congratulate Morrison in person after his unexpected election win in May. Although, I have no doubt she would rather be meeting Bill Shorten."
The pair have met several times before with the Australian leader making a low key visit to Christchurch for the memorial service, following the mosque attacks.