BBC sport news presenter Katie Gornall is at the Commonwealth Stadium in Edmonton.

Kritt Normsaskul:, external  "Getting massively excited about our  #Lionesses, external  vs. Japan! Come on girls. We are all right behind to you."

Paul Mulligan:, external  "Good luck to  #EnglandWomen, external  tonight against  #Japan, external . The form team - surely an  #England, external  team couldn't win another  #WorldCup, external ?"

DaveDisco, external : "I t's finally arrived three lions on a shirt and hoping my new heroes  @FranKirbyy, external  and  @stephhoughton2, external  will score 2-0  #Lionesses, external ."

We want to hear your comments on tonight's game. Send us your thoughts using the hashtag #golionesses or leave a message on the BBC Sport Facebook page.

Often likened to Barcelona for their playing style, Japan are led by head coach Norio Sasaki, who ramped up the pre-match rhetoric by saying his players are "superior" to England's and that he is "over-confident" for the game.

It is certainly true they have the ability to out-pass England, who have had inferior possession in three of their five games.

Mark Sampson, whose side have been more direct at the World Cup, conceded that Japan can cause his side problems in small spaces but has drawn plaudits for his adaptability during the tournament.

What will bringing Toni Duggan in mean? She is a striker but I'd imagine she'll be wide left...

England do indeed make one change from the side which started against Canada. Karen Carney misses out and Toni Duggan is in.

Japan are unchanged.

England's campaign has contained some key moments, and BBC pitchside reporter Tina Daheley has picked her top five in this cracking cartoon strip.

Check it out.

England's 1990 World Cup full back Paul Parker urges Mark Sampson's players to seize their moment in the spotlight.

The England players take a stroll around the surface of the Commonwealth Stadium in Edmonton. Coach Mark Sampson will have told his chosen XI who is starting, and we shall find out very soon.

Stephen Harper, living the dream. Those days don't last forever you know.

Portugal, Colombia, the world is watching the Commonwealth Stadium in Edmonton tonight...

We asked how you are following tonight's game. These are some of your responses.

Adam Comstive:, external In a hotel in Portugal. Baby is asleep. Wi-Fi is limited. The barman laughed when I asked if game would be on. Help.

Stephen Harper:, external I've finished university and my masters doesn't start until Autumn so I get to be a big layabout and stay up late.

William Bruce:, external Very limited wifi access in my office here in Colombia makes it so hard to follow England in the Women's World Cup GO ENGLAND!

We want to hear your comments on tonight's game. Send us your thoughts using the hashtag #golionesses or leave a message on the BBC Sport Facebook page.

Is this the closest Wayne Rooney will get to a World Cup semi-final?

Right-back Lucy Bronze has scored two crucial goals, while up front a fit-again Jodie Taylor was excellent against Canada - though Mark Sampson has also used Eni Aluko, Toni Duggan and Fran Kirby in that position so far.

Goalkeeper Karen Bardsley is available after an allergic reaction affecting her eye forced her off against Canada, while Sampson says midfielder Jordan Nobbs can feature, despite a post on her social media account before the Canada game saying her World Cup was over because of a hamstring injury.

One or two of the women could become heroes in the next few hours...

Image source, Reuters

We should have confirmed team news for tonight's game soon - but the early whispers are that Toni Duggan is in.

Coach Mark Sampson has changed his side around for every match, using 22 of his 23-player squad, making it difficult to predict who will start tonight.

But captain Steph Houghton is a certainty in central defence, as the Manchester City player is a leader at both ends of the pitch and a threat from set-pieces. She scored the crucial equaliser against Norway and scored three times for Team GB during the 2012 Olympics.

In midfield Fara Williams - who was homeless for seven years - forms a partnership with Jade Moore, who needed heart surgery at the age of 17 and claims that football literally saved her life, while the skilful Karen Carney has scored twice from the left-hand side.

Image source, Getty Images

The countdown to kick-off begins in the England camp and these players are ready to get their game faces on.

Image source, BBC Sport

Japan provide ominous opposition.

The World Cup holders have won all of their matches in Canada and have conceded just twice in five games.

But England beat them in the group stages of the last World Cup in Germany, and Japan were unconvincing in their quarter-final win over Australia.

England's first World Cup semi-final in 25 years. If that's not a genuinely big sporting event, I don't know what is. I heard an 83-year-old woman on the radio at lunchtime who has got a serious case of World Cup fever. She is going to bed at 21:00 BST tonight and has set her alarm for 23:30 to get up in time. Living the dream.

But how are you following tonight? Have you been hooked in by the England team's performances? Has your daughter/sister/aunty been practicing her Cruyff turns? Or are you still a naysayer who hasn't got the bug?

Image source, Getty Images

We want to know.

Get in touch at #golionesses,, external pop on to the BBC Sport Facebook page, external or BBC Sport's Google+ area., external

You can also text us on 81111 in the UK only - don't forget to say who you are and where you are texting from.

Image source, BBC Sport

England boss Mark Sampson, a 32-year-old Welshman who as recently as 2011 was managing Welsh amateur side Taff's Well AFC, has called for his adopted country to "stay with the team" and has even drafted a cut-out-and-keep letter for fans to help persuade bosses to agree to a late start on Thursday morning.

Has anyone asked for a late start? I grant you permission...

More than 1.6m people stayed through the early hours of Sunday morning to follow Mark Sampson's side in their quarter-final win over Canada and we could have a shed load more tonight.

We hope so anyway!