Blues book place in fourth successive League Cup final
Result: West Ham 0-7 Chelsea - Kerr scored four including first-half treble; Kirby, James & Reiten also on scoresheet
Chelsea will play Arsenal in final on 5 March at Selhurst Park
West Ham 0-3 Chelsea
Mackenzie Arnold is quickly off her line and she has to be.
Another ball over the top, the run from Sam Kerr is timed perfectly and, for a second, looks set for a hat-trick.
However, the West Ham keeper just beats her to the ball and gets it clear.
West Ham 0-3 Chelsea
Jenna Schillaci
Former Spurs captain on BBC iPlayer
West Ham have shot themselves in the foot conceding so early from that set-piece. All the goals are from West Ham mistakes, but this Chelsea team and the way they move the ball in the final third... it is so hard to play this way and they already look tired.
West Ham 0-3 Chelsea
We've got a brief delay with Magdalena Eriksson staying down for a moment after being caught by Viviane Asseyi.
The Chelsea skipper is fine to continue though.
West Ham 0-3 Chelsea
Jenna Schillaci
Former Spurs captain on BBC iPlayer
There are too many square balls being played out from the back from West Ham. It is clearly their style but sometimes it is not on. The press is just too good from Chelsea.
West Ham 0-3 Chelsea
West Ham lose possession in their defensive third yet again. Lauren James dinks the ball to the far post and Sam Kerr, on a hat-trick, is waiting.
The header isn't her best and Arnold pushes it away before the flag goes up. That one was offside.
West Ham 0-3 Chelsea
Even with a three-goal advantage, Chelsea are showing no let up. They've passed the ball around nicely but it is their effort off the ball that has been particularly impressive.
West Ham have not had a moment's peace in possession.
West Ham 0-3 Chelsea
Jenna Schillaci
Former Spurs captain on BBC iPlayer
It is a loose pass, into the path of Kerr. She is not going to miss. It's a touch and finish. West Ham will be really disappointed with how they have started here. Chelsea are looking fresher than ever and pouncing on every mistake.
Sam Kerr
Less than halfway through the first half and that could be that.
A loose pass out from the back and Emma Snerle can't bring it under control.
Erin Cuthbert snaps into the challenge, the ball comes to Sam Kerr and while West Ham appeal for offside, she smashes it past Arnold for her second of the night.
Image source, ReutersWest Ham 0-2 Chelsea
West Ham are two down and appear to be in big trouble in the tie but the home fans are still making plenty of noise, urging them to mount a comeback.
That is still just about possible after Mackenzie Arnold gets away with an unconvincing bit of goalkeeping from Reiten's cross.
West Ham 0-2 Chelsea
Another West Ham corner. The ball is sent out to the right where Filis twists and turns before digging out a cross from the byline.
Magdalena Eriksson slices the clearance behind but Millie Bright gets her head to the resulting corner.
West Ham 0-2 Chelsea
West Ham need to be careful or this could get very ugly for them - and very quickly.
They lose the ball in the middle of the park again, Kirby finds Kerr with a ball over the top and the striker holds it up before teeing up Guro Reiten.
Fortunately for the Hammers, the shot is jabbed harmlessly wide.
West Ham 0-2 Chelsea
Jenna Schillaci
Former Spurs captain on BBC iPlayer
What a team goal that was. That began from Lauren James tracking back and setting the team off on a counter. Fran Kirby with the precise finish. She uses her body so well. The way she moves the ball... everything looks so effortless. When you play against her, you can't get near her.
Fran Kirby
Brilliant from Chelsea! They cut a swathe through the West Ham defence, Lauren James coming in from the right to slide an inch-perfect pass into Fran Kirby's path.
No mistake from Kirby. The England star slots coolly past Mackenzie Arnold with her left foot.
Image source, PA MediaWest Ham 0-1 Chelsea
Jenna Schillaci
Former Spurs captain on BBC iPlayer
Excellent work from Brynjarsdottir, taking the touch to get away from her marker and carry the ball down field. She beat the press and set her team on the counter. That is what she brings to this team.
West Ham 0-1 Chelsea
That's far more encouraging from West Ham. Dagny Brynjarsdottir drives forward as the home side counter.
She gets to the edge of the box before sliding the ball to her left to Melisa Filis.
It needed a well-timed challenge from Millie Bright to get the ball behind for a corner, which comes to nothing.
West Ham 0-1 Chelsea
West Ham come forward for the first time looking for a quick response but the attack is halted by an offside flag.
Chelsea quickly go down the other end and win a corner. Not the best delivery and West Ham get this set piece away.
West Ham 0-1 Chelsea
Jenna Schillaci
Former Spurs captain on BBC iPlayer
A really teasing ball in there. West Ham have got to be disappointed with the marking. Sam Kerr left all on her own and it is the worst possible start for them. You can't leave her unchallenged.
Image source, Getty ImagesSam Kerr
That didn't take long! A free-kick from the left is swung in by Guro Reiten and Sam Kerr is there to stab it home at the far post.
Just what Chelsea would have wanted but the worst possible start for West Ham. The marking really wasn't up to much, it has to be said.
Image source, PA MediaWest Ham 0-0 Chelsea
Jenna Schillaci
Former Spurs captain on BBC iPlayer
What West Ham do have in Asseyi is a player with pace that they can use as an outlet when they are under the cosh. She could be useful tonight. Chelsea do make mistakes at the back.
West Ham 0-0 Chelsea
Both sides feeling each other out in the early stages. No surprise that it is Chelsea with the bulk of possession thus far.