Australia produced a statement win in the group stages as they thrashed Canada 4-0 on their way to finishing top of Group B.
“That [Canada] game was do or die for us and this is the exact same,” Australia's Caitlin Foord said.
“We’ll go in with the same mindset. We’re here to go all the way and that’s another hurdle tomorrow to get through to stay on the journey that we want to be on.
“We need to bring everything that we brought to the Canada game to put us in the best spot to get the result we need to move forward.”
'I usually wake up at 2am to watch football!'
Australia v Denmark (11.30 BST)
Emma Smith
BBC Sport in Melbourne
Friends Bella and Zac have donned their big coats and made their way down to the fan park for tonight.
Bella has only got into supporting the Matildas at the World Cup, but Zac has been a football fan for "as long as he can remember".
"I've loved it, it has been a great experience having football on at a reasonable time," he says. "I am so used to waking up at 2am to watch football."
"It has been so exciting," adds Bella. "I have always loved the atmosphere at sporting events where we're rallying around the same team. This is more of that than anything I've seen before, it is so fun."
They both back Australia to win - Bella 2-1, Zac 3-1.
Emma SmithCopyright: Emma Smith
Denmark want to continue living the dream
Australia v Denmark (11:30 BST)
Denmark know they will have the home crowd against them, but they are determined to progress further after reaching the last-16 for the first time since 1995.
The Danes finished second in Group D behind England, winning two of their three group games.
“We’re going to have our own party if we succeed in ruining a party and that part is fine by me,” coach Lars Sondergaard said.
“We’re living a dream and we want to continue living it as long as possible, until the final day of the tournament.”
'Every game is a final'
Australia v Denmark (11.30 BST)
Emma Smith
BBC Sport in Melbourne
Oliver is a veteran of the Melbourne fan zone - he was here at 3am watching the men's team reach the last 16 at Qatar 2022.
"It's been absolutely incredible to see the growth of Australian football," he tells me.
"Last year we were here with maybe 60 of us in the fan zone [for the first game of Qatar 2022], and by the end it was full two hours before kick-off, 8,000 people.
"Now to have the World Cup, with all these people of different nationalities, to go to the games and then to the Fan Zone after, it's just amazing."
He's a confident man, backing the Matildas for a 5-0 victory tonight.
Emma SmithCopyright: Emma Smith
No one budging at the media centre
Australia v Denmark (11:30 BST)
Anna Thompson
BBC Sport at Sydney Football Stadium
Hardly anyone has left their seat in the media centre here at the Olympic Stadium to take up their position in the tribune outside to get ready for Australia v Denmark.
They are all glued to the television watching the England v Nigeria penalty shoot-out!
BBC SportCopyright: BBC Sport
'The tournament needs the co-hosts to progress'
(Australia v Denmark 11:30 BST)
.Copyright: .
A capacity crowd of about 80,000 is expected and the atmosphere is going to be absolutely incredible.
I'd love to see Sam Kerr back in action and I'd love to see the Matildas go through.
The tournament needs the co-hosts to progress, but Denmark's defence is going to make things very difficult for them, and they might need some of Kerr's magic to make the difference. 2-1 After extra time.
**Penalty shootout Klaxon**
England 0-0 Nigeria
England versus Nigeria has just gone to penalties!
The big question before kick off was whether Australia's star player, Sam Kerr, would make her first start of the tournament.
Well, the answer is she doesn't. Kerr is among the substitutes as they name the XI that started the emphatic 4-0 win against Canada in the group stages is picked.
Australia XI: Arnold, Catley, Kennedy, Hunt, Carpenter, Foord, Cooney-Cross, Gorry, Raso, Van Egmond, Fowler
I'm watching my first game at a fan park tonight - with a crowd which has grown in size considerably since I took the below picture.
There was a really good atmosphere for the England v Nigeria game, with gasps at the Lauren James stamp and cheers when she was sent off.
There are plenty of green and gold woolly hats and scarves on show, and they are more than just symbols of support. It is a very chilly night in Melbs.
Emma SmithCopyright: Emma Smith
Australia expects
Australia v Denmark (11:30 BST)
Green and Gold is everywhere in Australia now as the Women's World Cup co-hosts look to make history.
They've never made it beyond the quarter-finals of the tournament before but it feels like this is their best chance yet to go further than ever before.
First, there's a tricky last-16 tie against Denmark to overcome, but if the Matildas navigate it successfully then their fans will really start to believe that this could be their year...
Live Reporting
Gary Rose
All times stated are UK
'We're here to go all the way'
Australia v Denmark (11:30 BST)
Australia produced a statement win in the group stages as they thrashed Canada 4-0 on their way to finishing top of Group B.
“That [Canada] game was do or die for us and this is the exact same,” Australia's Caitlin Foord said.
“We’ll go in with the same mindset. We’re here to go all the way and that’s another hurdle tomorrow to get through to stay on the journey that we want to be on.
“We need to bring everything that we brought to the Canada game to put us in the best spot to get the result we need to move forward.”
'I usually wake up at 2am to watch football!'
Australia v Denmark (11.30 BST)
Emma Smith
BBC Sport in Melbourne
Friends Bella and Zac have donned their big coats and made their way down to the fan park for tonight.
Bella has only got into supporting the Matildas at the World Cup, but Zac has been a football fan for "as long as he can remember".
"I've loved it, it has been a great experience having football on at a reasonable time," he says. "I am so used to waking up at 2am to watch football."
"It has been so exciting," adds Bella. "I have always loved the atmosphere at sporting events where we're rallying around the same team. This is more of that than anything I've seen before, it is so fun."
They both back Australia to win - Bella 2-1, Zac 3-1.
Denmark want to continue living the dream
Australia v Denmark (11:30 BST)
Denmark know they will have the home crowd against them, but they are determined to progress further after reaching the last-16 for the first time since 1995.
The Danes finished second in Group D behind England, winning two of their three group games.
“We’re going to have our own party if we succeed in ruining a party and that part is fine by me,” coach Lars Sondergaard said.
“We’re living a dream and we want to continue living it as long as possible, until the final day of the tournament.”
'Every game is a final'
Australia v Denmark (11.30 BST)
Emma Smith
BBC Sport in Melbourne
Oliver is a veteran of the Melbourne fan zone - he was here at 3am watching the men's team reach the last 16 at Qatar 2022.
"It's been absolutely incredible to see the growth of Australian football," he tells me.
"Last year we were here with maybe 60 of us in the fan zone [for the first game of Qatar 2022], and by the end it was full two hours before kick-off, 8,000 people.
"Now to have the World Cup, with all these people of different nationalities, to go to the games and then to the Fan Zone after, it's just amazing."
He's a confident man, backing the Matildas for a 5-0 victory tonight.
No one budging at the media centre
Australia v Denmark (11:30 BST)
Anna Thompson
BBC Sport at Sydney Football Stadium
Hardly anyone has left their seat in the media centre here at the Olympic Stadium to take up their position in the tribune outside to get ready for Australia v Denmark.
They are all glued to the television watching the England v Nigeria penalty shoot-out!
'The tournament needs the co-hosts to progress'
(Australia v Denmark 11:30 BST)
A capacity crowd of about 80,000 is expected and the atmosphere is going to be absolutely incredible.
I'd love to see Sam Kerr back in action and I'd love to see the Matildas go through.
The tournament needs the co-hosts to progress, but Denmark's defence is going to make things very difficult for them, and they might need some of Kerr's magic to make the difference. 2-1 After extra time.
**Penalty shootout Klaxon**
England 0-0 Nigeria
England versus Nigeria has just gone to penalties!
Follow the drama here.
Kerr on the bench
Australia v Denmark (11:30 BST)
The big question before kick off was whether Australia's star player, Sam Kerr, would make her first start of the tournament.
Well, the answer is she doesn't. Kerr is among the substitutes as they name the XI that started the emphatic 4-0 win against Canada in the group stages is picked.
Australia XI: Arnold, Catley, Kennedy, Hunt, Carpenter, Foord, Cooney-Cross, Gorry, Raso, Van Egmond, Fowler
Subs: Williams, Micah, Nevin, Luik, Polkinghorne, Vine, Wheeler, Chidiac, Yallop, Simon, Kerr, Grant
There's just one change for Denmark as Stine Ballisager Pedersen returns, replacing Nicoline Sorensen.
Denmark XI: Christensen, Veje, Boye, Ballisager, Sevecke, Madsen, Holmgaard, Kühl, Thomsen, Harder, Vangsgaard.
Subs: Larsen, Hasbo, Troelsgaard, Snerle, Thrige, Sorensen, Thogersen, Gevitz, Bruun, Geji Jensen, Svava, Bay
Post update
Australia v Denmark (11.30 BST)
Emma Smith
BBC Sport in Melbourne
I'm watching my first game at a fan park tonight - with a crowd which has grown in size considerably since I took the below picture.
There was a really good atmosphere for the England v Nigeria game, with gasps at the Lauren James stamp and cheers when she was sent off.
There are plenty of green and gold woolly hats and scarves on show, and they are more than just symbols of support. It is a very chilly night in Melbs.
Australia expects
Australia v Denmark (11:30 BST)
Green and Gold is everywhere in Australia now as the Women's World Cup co-hosts look to make history.
They've never made it beyond the quarter-finals of the tournament before but it feels like this is their best chance yet to go further than ever before.
First, there's a tricky last-16 tie against Denmark to overcome, but if the Matildas navigate it successfully then their fans will really start to believe that this could be their year...