Another chance for goalscorer Fran Kirby, but the England international sends her left-footed shot from outside the box well wide.

She couldn't get her foot around the ball under pressure from a couple of Bayern defenders.

The visitors mount an attack and a good challenge by Niamh Charles denies Hanna Glas a crossing opportunity at the expense of a corner on Bayern's right flank.

The delivery is overhit and bounces out for a throw-in on the far side.

Bayern can't really cope with Chelsea at the moment.

The Blues are pressing well and putting the visitors under pressure.

But the Chelsea defence need to keep their concentration with their side on top midway through the half.

Great cross by Melanie Leupolz almost gets Chelsea a second.

It's zipped into the near post and Sam Kerr tries to flick it on.

In the end, Marina Hegering clears it and the hosts get a corner.

Chelsea threaten again as a free-kick into the Bayern box prompts a bit of pinball.

It drops to Melanie Leupolz, but the Blues midfielder skews her volley wide.

Image source, Getty Images

It's all about game management now for Chelsea.

Emma Hayes has seen her side beaten in their two previous Champions League semi-final appearances.

The hosts will continue to be a threat with their front three of Pernille Harder, Fran Kirby and Sam Kerr.

They'll want another goal to give them some peace of mind.

Crucial, crucial block by Chelsea defender Jess Carter.

The right-back closes down Lineth Beerensteyn, who had the ball cut back to her 10 yards out.

A goal-saving challenge by Carter, as the Dutchwoman's shot was powerful and heading on target.

Chelsea have started well and are comfortable at the moment.

The goal helps, of course, giving them the upper hand with the away goal.

As things stand, the Blues are on their way to the final.

Sophie Ingle has just crashed a shot over the Bayern goal.

Chelsea forward Pernille Harder has her first attempt at goal, sending a right-footed effort well clear of the Bayern bar from about 20 yards out.

It was worth a dig, but off target nevertheless.

First bit of work for Blues keeper Ann-Katrin Berger to do, as the German claims a free-kick which was floated into the box by Lina Magull.

The delivery was a bit of a waste by the visitors, as no red shirt was close to getting on the end of it.

Image source, Getty Images

Bayern reply and have their first moment on the ball in the Chelsea box.

Klara Buhl has it on the left-hand side of the area and cuts back inside onto her right foot before seeing her shot blocked by the leg of a Blues defender.

First attack from Chelsea as Fran Kirby is freed down the right, and the ball then breaks to Ji So-Yun in the box.

The South Korea international clips the ball to the back post and a fine defensive header from Amanda Ilestedt denies Pernille Harder a headed chance.

Bayern defend the corner well.

Chelsea need to beware a fast start from the visitors.

Bayern have scored in the opening 22 minutes of their past six Champions League games.

The German side have also won all seven of their European matches this season.

Here we go.

Just 90 minutes stand between Chelsea and a first-ever Women's Champions League final.

The Blues know a 1-0 win would be enough. If it ends 2-1, we'll head for extra time.

Esther Staubli of Switzerland is the referee at Kingsmeadow.

Alongside our text, you can listen to live radio commentary of the action from Kingsmeadow.

Click the play button above to tune in to coverage on BBC Radio 5 live sports extra.

Vicki Sparks will guide you through the game, with former Arsenal and England striker Kelly Smith alongside her.

Image source, Getty Images

Emma Hayes was on the Arsenal coaching staff when the Gunners won the Uefa Women's Cup (as the Women's Champions League was then known) in 2007.

She has come close to leading Chelsea to the continental final on two previous occasions, but the Blues lost in the semi-finals to Wolfsburg in 2018 and Lyon in 2019.

With those two European powerhouses already out of the competition, this could be the west London club's best shot at glory.

The Blues have lost just one of their past 14 matches in all competitions, and that was the defeat by Bayern last Sunday.

The winners of this tie will face either Barcelona or Paris St-Germain in the final in Gothenburg on Sunday, 16 May.

The second leg of the other tie started at 11:00 BST, having been nicely poised at 1-1.

Lieke Martens put Barca 2-0 up after 31 minutes but Marie-Antoinette Katoto hit back for PSG before half-time.

The hosts still lead 3-2 on aggregate, with about 20 minutes remaining in Catalonia.

Chelsea boss Emma Hayes is well aware her side have little margin for mistakes this afternoon.

"The realities are that if we're going to progress, we probably need to score more than one goal," she said.

She has called on her players to “eliminate” their errors, saying both of Bayern’s goals last Sunday came “from poor defensive mistakes" by the Blues.

"I trust the group,” Hayes added.

“I trust what we know and we need to deliver the performance I know we're capable of.”

Image source, Getty Images

Chelsea make two changes from the side beaten in Munich seven days ago.

The west London club welcome back captain Magdalena Eriksson from a calf injury, and Niamh Charles comes in at left-back.

Sophie Ingle pushes into midfield as Jonna Andersson and Guro Reiten drop out.

Chelsea XI: Berger, Carter, Bright, Eriksson, Charles, Leupolz, Ingle, Ji, Kirby, Harder, Kerr.

Bayern Munich make one change from the first leg. Lea Schuller comes in for experienced midfielder Simone Laudehr.

Bayern Munich XI: Benkarth, Ilestedt, Hegering, Glas, Beerensteyn, Zadrazil, Magull, Schuller, Simon, Buhl, Lohmann.