A late break in play as Eve Perisset gets treatment. Last gasp instructions for the players.

Four minutes of normal time remain.

Rachel Brown-Finnis
Ex-England goalkeeper on BBC One

Chelsea are just going to want to keep possession and run the energy out of Manchester United's legs.

They know that United will chase because they don't want to leave anything on the pitch.

It doesn't need to be pretty, Chelsea just want to get over the line.

Was that the United chance?

Ona Batlle beats Jess Carter all ends up, cuts back to Alessia Russo - but the striker scuffs her shot!

Marc Skinner throws his hand aloft in frustration.

Mary Earps looks very frustrated on the ball, yelling at her players for more movement in front of her.

United will have to start going long soon.

Should be 2-0!

Sam Kerr cuts in from the left, leaving Maya Le Tissier in her dust, and cuts back to Sophie Ingle who fires over.

Big chance.

Lauren James goes into the book for kicking the ball away.

The Chelsea winger has run herself into the ground today.

Double change by United - in defence Hannah Blundell is replaced by Aoife Mannion. Up top, Ella Toone comes off for Lucia Garcia.

Toone looks very unhappy about that.

The attendance is announced - 77,390.

Not only a record crowd for a Women's FA Cup final, but a world record for a women's domestic match, beating a league game between Barcelona and Atletico Madrid.

Incredible.

What have United got to give now? They were on top for the first hour, but they need to come up with even more ideas here.

Those missed chances in the first half are proving expensive.

Rachel Brown-Finnis
Ex-England goalkeeper on BBC One

I wouldn't write Manchester United off because they have created chances but Pernille Harder has been the one to finally open them up.

But there's one major hurdle United haven't overcome since being founded and that's beating Chelsea.

Image source, Getty Images

Chelsea's tails are now fully up. As predicted, they have pressed United much higher this half, and got their rewards.

A change for the Blues too, Jess Carter replacing Niamh Charles.

Emma Sanders
BBC Sport at Wembley Stadium

There's the back flip!

Sam Kerr ran straight over to Pernille Harder, then let loose with her trademark celebration and turned back to the Chelsea fans' end to give them a roaring fist pump before the game kicked off again.

Chelsea have looked far more threatening since Harder's introduction.

Image source, Getty Images

Rachel Corsie
Scotland and Aston Villa defender on BBC Radio 5 Live

A simple finish, but those are movements she loves. An incredible pass from Harder and it is a beautiful goal. Kerr laps that up.

Rachel Brown-Finnis
Ex-England goalkeeper on BBC One

Pernille Harder has had an instant impact. She's been on just over five minutes and she's had a couple of shots at goal and helped to create other chances.

The way she peels off the shoulder makes her so difficult to mark.

Chelsea have looked a different outfit since Harder has come onto the pitch.

Kev Mcveigh: Turner knew exactly what she was doing there. She clearly swung into Harder. Foul and yellow card. Not sure what the commentators watched.

Have to say I disagree with Kev. But what do you think?

Brilliant ball by Lauren James, and Pernille Harder is through one on one to the left of Mary Earps' goal. She tries to pull back to Sam Kerr, however United get it clear.

It looked like Harder was marginally offside, so would probably have been disallowed.

Free kick Chelsea, Erin Cuthbert gets clattered around 35 yards out from the United goal by Rachel Williams.

Her first action in the final, let them know you're there.

Emma Sanders
BBC Sport at Wembley Stadium

Marc Skinner and Emma Hayes have both made attacking changes which indicate they don't want this going to extra-time.

Rachel Williams, United's 'super-sub' this season, tends to play more direct.

With Pernille Harder on the pitch, Sam Kerr now has someone to play off. It changes the whole dynamic.