England hold nerve to win by three runs - Australia now lead points-based series 6-2
Australia slip to 75-4 & 160-7 after being 59-0
Perry's late onslaught - 51 off 27 balls - not enough for Australia
Ecclestone reaches 100 T20 wickets - the quickest to the mark
England set Australia 187 to win, despite losing five wickets for 19 runs in 23 balls
Sutherland takes two wickets in two balls and superb catch
Wyatt top-scores with 76 off 46 balls
Next match: Third T20 at Lord's, Saturday (18:35 BST)
Highlights on BBC iPlayer and BBC Sport app from 23:00 BST
Alex Blackwell
Former Australia batter on BBC Test Match Special
Image source, Getty ImagesI hope England get a win tonight because I would love the Ashes to still be alive going into the final four games.
They need a better powerplay tonight, it was their worst in 12 games in the opening T20.
The Australian milling around at the boundary's edge. Here come the umpires to lead us out. England openers Danni Wyatt and Sophia Dunkley lift themselves from leaning on the advertising boarding and jog onto the field between various flame-spewing pillars.
Ffion Wynne
BBC Sport at The Oval
A group of kids are giving the players a guard of honour to run through while waving some flags It's very cute - but they've gone a bit early and have now been waving them for about five minutes.
Got to credit the commitment but surely some arms are going to give way soon? The flags will be dragging along the floor by the time the players get through.
There was a brief period of doubt for Australia before they secured their win in the first T20 at Edgbaston.
Chasing 154, Australia were cruising at 130-2 but lost three wickets for 10 runs as England fought back at the death.
Opener Beth Mooney finished unbeaten on 61 as Australia edged home with just one ball to spare.
England stuttered to 118-7 but were boosted by Amy Jones' unbeaten 40 from 21.
You can read Ffion Wynne's full report here.
Alex Blackwell
Former Australia batter on BBC Test Match Special
England have to go game-by-game.
They know that Australia are beatable, they've got close.
They need to put pressure on at both ends, not just when Sophie Ecclestone is bowling.
Their bowling and fielding has been a little bit concerning. If they can improve on those areas they can beat Australia.
Melissa Story
BBC Test Match Special commentator
It feels psychological for England.
They almost come up against Australia and see them as unbeatable.
There are players in the squad that shouldn't have the psychological barrier now and they have traded some words with Australia.
They need to get over that hurdle but I can't help feeling like Saturday was a very good opportunity.
So how do the England team assess their chances?
"We've seen weirder things happen than that in cricket," says spinner Sophie Ecclestone.
Perhaps, but maybe not all that many. You can read what she has to say here.
England need nine points to regain the Ashes, so must win all five remaining white-ball games - or win four if one is tied or rained off.
To do so would be a truly remarkable achievement, even on home territory. Australia are the current world champions in both the 50-over and 20-over formats. They also won the Commonwealth Games last year.
They have won 41 out of 42 one-day internationals in the last five years, and 57 out of 66 T20s.
Ffion Wynne
BBC Sport at The Oval
It's just been announced here that we are expecting another big crowd here tonight of around 20,000, following the 19,527 that came to Edgbaston on Saturday.
England captain Heather Knight: "There is some disappointment at losing three in a row. I was going to bowl as well but I think it will be a pretty good cricket wicket.
"We've got a good crowd in and want to put on a show. We are just focused on one game at a time, we are really close and have competed really well. It is just those small moments."
On bringing in Charlie Dean for Freya Davies: "Nat is back bowling and we're hoping to get some overs out of her so it changes the balance of our team a little bit. Charlie Dean is a world-class player as well."
On whether she thought she'd ever reach 100 T20 internationals: "Probably not. T20 is probably the one I've had to work at and adapt my game for and evolve."
Australia batter Alyssa Healy: "It looks a pretty decent wicket and we can't expect it to change.
"I hope there's a bit more pace than the first game but we're happy to have a bowl first.
'We've relaxed and chilled out and watched a pretty incredible Test match and then we've ran around at the pretty incredible Oval. We've been lucky to play at some great grounds on this tour. "
Australia are unchanged, fielding the the same side that won by four wickets at Edgbaston.
England captain Heather Knight has one change to her XI as Charlie Dean replaces Freya Davies in the side.
England: Sophia Dunkley, Danielle Wyatt, Alice Capsey, Nat Sciver-Brunt, Heather Knight (captain), Amy Jones (wk), Danielle Gibson, Sophie Ecclestone, Sarah Glenn, Charlie Dean, Lauren Bell.
Australia: Beth Mooney, Alyssa Healy (captain & wk), Tahlia McGrath, Ash Gardner, Ellyse Perry, Grace Harris, Annabel Sutherland, Georgia Wareham, Jess Jonassen, Megan Schutt, Darcie Brown.
Alyssa Healy wins her third successive toss of the series as with Edgbaston on Saturday her side is going to have a bowl.
We've got you completely covered tonight. Here's how you can follow the second T20:
Hello there.
After victory in the one-off Test and first T20, Australia are sitting pretty with six points in this multi-format Ashes series.
With two points available for each white-ball win and five games remaining, one more victory for Alyssa Healy's team will ensure that they cannot be overtaken and will retain the trophy they won on home soil early last year.
The series is on the line at The Oval. Will Heather Knight make changes to her line-up? We'll have the toss shortly...
Tests: Australia 1-0 England
T20s: Australia 1-0 England
Points: Australia 6-0 England
Alyssa Healy's Australia side are one game away from retaining the Ashes. Can England stand in their way?