Sari Van Veenendaal is forced to make a late save from Eni Aluko, who would have dearly loved to get a goal.

The Arsenal keeper untidily pushes away Aluko's near-post strike.

Sue Smith
Former England forward on BBC One

Katie Chapman has been briliant, Ji So-Yun in the middle of the park and Fran Kirby.

But I've got to go for Ramona Bachmann, I think she has been outstanding.

You wanted a moment of brilliance to change the game and she offered that twice.

We enter injury time.

There are five minutes of that. Just about enough time to get two goals?

The problem is Arsenal haven't really threatened much in the previous 90 minutes.

Two minutes and not much injury time to play.

Surely Arsenal cannot come back from this?

Meanwhile. BBC summariser Sue Smith gives the player-of-the-match award to two-goal Ramona Bachmann.

It's hard to argue with that.

Tom Garry
BBC Sport at Wembley

Image source, Reuters

What a season Fran Kirby is having.

The PFA Women's Player of the Year, and the first ever Football Writers' Association women's footballer of the Year.

And now she appears to have settled the cup final with a really super strike.

Almost a fourth for Chelsea as Erin Cuthbert fizzes a shot just wide.

A standing ovation for two-goal Chelsea striker Ramona Bachmann.

She has been magnificent.

No respite for the Gunners. Eni Aluko is on.

Katie McCabe and Danielle Carter - Arsenal's FA Cup matchwinner in 2016 - are on. Emma Mitchell and Lisa Evans come off.

It's now or never for Arsenal.

Sue Smith
Former England forward on BBC One

That's exactly what Chelsea needed.

Fran Kirby found that little pocket of space, good first touch and that is just perfect technique, curling it into the bottom corner.

Is that a penalty. It looked like a decent shout at first glance but was it outside the area?

Arsenal sub Heather O'Reilly goes down right on the edge of the box but it looks like it was a tangle of legs and nothing more.

Another Chelsea substitution.

Drew Spence was looking a bit tired and comes off.

Scotland international striker Erin Cutherbert gets her chance.

Chelsea make their first change of the afternoon.

Maria Thorisdottir gets her taste of Wembley action, with Joanna Andersson making way. It's a like-for-like replacement on the left flank.

Chelsea are dictating the tempo and it all seems very simple at the the moment.

One goal will change all that of course.

Arsenal threaten briefly on the left, but the imposing figure of Millie Bright is quick to track back and boot the ball out for a throw-in.

Tom Garry
BBC Sport at Wembley

Chelsea's forward players are producing their dynamic best in this second half and Emma Hayes' side are enjoying the rewards.

Bachmann, Kirby, and Ji - fed by the energetic Drew Spence in attacking midfield - are all so dangerous when they're in this kind of form. They've all had superb seasons.

Now Arsenal are in trouble because no side has managed to even score against Chelsea in this competition yet this season, let alone score twice. The Blues have also only let in nine goals in 14 league games. Ominous.

Arsenal make the first change of the match.

Dominique Janssen comes off and is replaced by Heather O'Reilly.

Arsenal need to go for it now. Just over 25 minutes left.

Sue Smith
Former England forward on BBC One

Image source, Reuters

Ramona Bachmann was good in the first half but she has come out completely running the show.

She cuts in onto her left and there is only one thing on her mind and again Arsenal keeper Sari van Veenendaal has no chance.

Maren Mjelde gets across her marker but her header is comfortably saved by Arsenal keeper Sari van Veenendaal.

Chelsea now have a free-kick in a dangerous position out wide.

A third would wrap it up...