The Central Coast will be well represented at the 2018 Commonwealth Games on the Gold Coast which starts this week.
On Thursday, Canada finished second, almost four seconds behind.
The team of Shayna Jack, Bronte Campbell, Emma McKeon and Cate Campbell went 0.60 seconds under Australia's previous world record set at the 2016 Rio Olympics.
Former Kincumber High School student and Olympic Gold Medallist Ellia Green is a member of the ground-breaking women's Sevens team as females compete in Rugby Sevens for the first time ever at the Commonwealth Games.
Elsewhere at the pool, Scotland's Duncan Scott led all qualifiers in the 200-meter freestyle in 1: 46.62, with Mack Horton, who won gold in the 400 freestyle on Thursday night, and Olympic 100 champion Kyle Chalmers also advancing to the final.
"I think there is something to be said for home crowd advantage".
"This is my first Commonwealth Games so a medal is quite big for me now", the 20-year-old said.
New Zealand's flagbearer Sophie Pascoe added to her growing medal collection with victory in the women's SM10 200m individual medley, while Titmus ensured that Australia finished with another gold when she held off Ruck in a pulsating relay.
The Kiwis made the gold medal race after qualifying as the second fastest team.
Wilmott, beaten by Miley in the 2014 Glasgow final, fought back tenaciously in the final freestyle leg to pip the Scot by 0.26secs with Australia's Blair Evans third.
Pt.1 This past week I've had to make one of the hardest decisions of my career so far and I would like to firstly say thank you to medical professionals at SASI for being so diligent throughout this process because without them life could have be a lot worse.