England (2pts) won by seven wickets
Eng 125-3 (Taylor 50, Edwards 39, Osborne 2-22)
Aus 122-8; Perry 30, Sciver 2-18
Australia lead series 8-4 on points
Quote MessageWe're not looking too far ahead, we're really focused on playing our natural game. We know the crowd won't be with us but hopefully the game is a cracker and it is a good show for everyone.
Australia captain Meg Lanning on TMS
Ebony Rainford-Brent
Ex-England batter on BBC Test Match Special
Quote MessageWhat we all want to see from England is playing with freedom and self-expression.
Quote MessageThe groundstaff have done well, to think we are going to play in front of a sell-out it would have been criminal if we were not able to get out here. We've brought Hazell and Wyatt back with a lot of experience in T20 and brought back Jenny Gunn for her experience. Katherine Brunt will be going in at five, we're not going to die wondering, we want to see a positive brand. This team normally play well with their backs to the wall.
England captain Charlotte Edwards on TMS
And yes, that is the team as officially announced - with fast bowler Katherine Brunt, a powerful hitter, batting at number five.
England: Charlotte Edwards (capt), Lauren Winfield, Sarah Taylor (wk), Natalie Sciver, Katherine Brunt, Heather Knight, Lydia Greenway, Danielle Wyatt, Danielle Hazell, Anya Shrubsole, Jenny Gunn.
Australia: Elyse Villani, Ellyse Perry, Meg Lanning (capt), Jess Jonassen, Alex Blackwell, Jess Cameron, Alyssa Healy (wk), Grace Harris, Erin Osborne, Sarah Coyte, Megan Schutt.
Umpires are Nick Cook and Martin Saggers.
Izzy Westbury
Middlesex captain on BBC Test Match Special
Quote MessageI'm delighted England have brought back Wyatt and Hazell, it's a positive step. Hazell is the number one T20 bowler in the world, you can't not pick her. I know a lot of the Australia batsmen really do fear her.
A bit of team news for you - England have named spinners Danielle Hazell and Danielle Wyatt, both brought into the squad today, in their XI. There's no place for Rebecca Grundy, Laura Marsh or Georgia Elwiss.
Alison Mitchell
BBC Test Match Special
Quote MessageThere's been a lot of fighting talk from England this week. Katherine Brunt has said she doesn't think the story of the summer is over yet.
Quote MessageWe might have had a bowl as well but we're in a good position. If we play to our potential the result will take care of itself.
Australia captain Meg Lanning
Quote MessageThe pitch has been under covers all day so hopefully we can get some assistance early on.
England captain Charlotte Edwards
Image source, Getty ImagesEngland win the toss and field first. Aussie captain Meg Lanning admits she might have made the same decision.
We're expecting the captains to toss up any minute, by the way.
We shouldn't forget that not only have Australia won the last three World Twenty20 events in 2010, 2012 and 2014 - but they are currently on a record run of 16 successive victories in this format.
Since a defeat by New Zealand in March 2014, they've beaten South Africa once, Ireland four times, Pakistan five times, West Indies once and England once.
Will it be "sixteen, going on seventeen" for the Southern Stars tonight?
Image source, Getty ImagesGloucestershire have beaten Hampshire by four wickets with an over to spare - they'll face Essex or Yorkshire in the semi-finals.
Image source, Getty ImagesOne new name in the Australian ranks for the Twenty20 internationals, who wasn't involved in the ODIs or Test, is powerful all-rounder Grace Harris, 21, who starred in Ireland last week as Australia warmed up for this series with a 3-0 clean sweep of the Irish.
The Queensland right-hander made 39 not out from 21 balls in the third and final game in Ireland, after an opening stand of 121 by Elyse Villani (80 from 53 balls) and Ellyse Perry (55 not out from 46).
Image source, Getty ImagesEngland proudly boast that they've never lost at Chelmsford - in Twenty20 cricket they've beaten South Africa by nine wickets in 2014, Australia by 15 runs in 2013, India by eight wickets in 2012, New Zealand by eight wickets in 2011 and by 37 runs in 2010. In the ODI format they've beaten Australia twice in 2009, NZ in 2004, and SA in 2003 and 2000.
It's about now that a pessimist like my dad would say something like "well, these runs always have to end some time..."
Before that, there's been an exciting One-Day Cup quarter-final being played out on BBC Radio 5 live sports extra at Bristol. Gloucestershire, chasing 218 from 34 overs in a rain-affected game with Hampshire, looked doomed when captain Michael Klinger fell for 87, but some big hitting from Jack Taylor has left the hosts needing only 15 from three overs.
And despite the weather, a sell-out crowd is expected at Chelmsford this evening - it's been a popular venue when it's staged women's internationals in recent years.
TMS will be on air from 18:45 - with Alison Mitchell, Charles Dagnall, Ebony Rainford-Brent, Isa Guha and Izzy Westbury standing by, having packed their waterproofs.
Here's what the BBC Weather team are predicting:
Quote MessageRain will have cleared off by then [the start] and just the chance of a few passing showers in the first hour but overall the cricket is looking dry.
Aisling Creevey, BBC Weather