Ana Borges sends in a cross but it is an easy save for Arsenal's Sari van Veenendaal.

Teenage midfielder Leah Williamson comes on for Asisat Oshoala.

Chelsea's Katie Chapman is urging Oshoala to hurry up and get off the pitch quickly.

The Nigeria winger has been a constant threat all afternoon.

Image source, Rex Features

Have this Chelsea side looked like a team that won 6-3 against Liverpool last weekend?

No, no they haven't.

Time is running out for the league champions.

Image source, Getty Images

Arsenal manager Pedro Martinez Losa will be thrilled with the way his side have played this afternoon. Against the odds, they have controlled this all-London clash against their rivals, and the holders, and are six minutes plus stoppage time away from winning the cup.

Ji So-Yun whips in a deep free-kick for Chelsea but Sari van Veenendaal punches it away.

The new record crowd for a Women's FA Cup final is 32,912 - that's the official attendance at Wembley today.

Our colleagues on the touchline at BBC Radio London tell us that the assistant referee's flag wasn't broken after all.

Apparently the luminous yellow flag was clashing with similar-coloured tops of some people in the crowd at Wembley.

It's been changed to a red and yellow flag to avoid confusion. #nowyouknow

Chelsea make their third and final substitution as Beth England - signed from Doncaster Rovers Belles in the winter - replaces Millie Bright.

Hedvig Lindahl saves Chelsea again, this time clawing away a dipping effort from Vicky Losasa, who has been very effective for the Gunners in this game. Arsenal could be several goals up.

Arsenal make a double substitution, with Danielle van de Donk replacing England legend Kelly Smith, and Dominique Janssen replacing Fara Williams.

There is a break in play while keeper Sari van Veenendaal receives treatment for Arsenal.

Sue Smith
Former England forward on BBC Two

"If there's a player you want the ball to fall to in the box it's Ji.

"I've seen her score so many from that position but it just doesn't come down, she can't get her body over the ball to keep it down."

That was a huge chance! Chelsea go very, very close.

From a Chelsea corner - won by the aggressive running of Eniola Aluko - the ball is nodded down to Ji So-Yun, who is in acres of space inside the Arsenal penalty area.

She has time to set herself, by half-volleys just high and wide of the far post.

Agonising for the Blues. Will they get a better chance than that?

Chelsea have a little over 20 minutes left of normal time to get back into this game. They've not been themselves so far today, that's for sure.

Sue Smith
Former England forward on BBC Two

"Chelsea need to commit more players forward. 

"The front three need to be closer together, they're too stretched."

We have a replacement flag being brought on, for one of the officials. You don't see that every day! The original flag looks broken.

BBC Radio London summariser Carrie Dunn: 

"It was a rather poor touch from Oshoala in the box when she looked to shape and shoot which gave the goalkeeper more time to narrow the angle."

Image source, The FA

Arsenal's Asisat Oshoala has another chance to extend their lead - but she is denied by the onrushing Hedvig Lindahl.

It was another neat through ball from Kelly Smith that created the opportunity - the former England star has been excellent.

From a Gunners corner moments later, Emma Mitchell heads narrow wide for Arsenal.

Ji So-Yun plays in Eniola Aluko down the Chelsea left. She cuts inside and tries to curl into the far corner from range but her effort goes high and wide.

Arsenal's Kelly Smith and Chelsea's Hannah Blundell are both angry, after a little coming together. The referee calms things down.