Here we go.

Katherine Sciver-Brunt opens the bowling for England. Laura Wolvaardt gets bat on ball but can't pierce one through the covers. No run.

Ffion Wynne
BBC Sport in Cape Town

South Africa are going to be up for this. You could see the players wiping tears from their eyes during the national anthem.

We've already had some fireworks, quite literally as the anthems finish with a loud bang and a splash of colour.

Nice touch as Katherine Sciver-Brunt walked out to the middle alongside her niece and nephew.

South Africa men's rugby captain Siya Kolisi is also in the crowd today.

Alex Hartley
Former England bowler on BBC Test Match Special

It is a shame this game is not being played after work. Unfortunately the crowd is bang average at the moment. Hopefully more people come in.

The teams are out and now it's time for the national anthems.

We're nearly there.

England struck 246 runs in 20 overs in a warm-up match against South Africa before this tournament.

They also beat them at the Commonwealth Games and swept them in a home three-match T20 series last July.

Not to worry you, but everything points to an England win today.

Alex Hartley
Former England bowler on BBC Test Match Special

I would have wanted England to bat first to get runs on the board. It is not going to be plain sailing. South Africa have a history of losing semi-finals but it is not going to be a walk over.

It am nervous but confident.

It is South Africa's third T20 World Cup semi-final, and they have also reached the same stage of the 50-over World Cup three times - but have never reached a final.

"There's no pressure on us, we can just go out and enjoy playing freely," said South Africa captain Sune Luus in the build-up to this match.

"We've been on the other side of it too many times to know exactly what it feels like, and we don't want to be there again.

"So I guess there's motivation for us to just go out and enjoy the game, with nothing to lose. We're just going to try and play our best cricket and try and enjoy the moment."

Henry Moeran
BBC Test Match Special commentator

England are the favourites but when the hosts are involved in a World Cup semi-final you just never know.

England thrashed South Africa in the multi-format series that the teams played during the summer of 2022, and also beat them in the semi-final of the 50-over World Cup earlier that year.

Heather Knight's side have gained attention during the competition with their attacking and aggressive brand of cricket, especially with the bat as Nat Sciver-Brunt leads the run-scoring charts - and they are prepared to keep playing that way.

"Everyone knows their plan and always take the positive option," said batter Danni Wyatt earlier this week. "It's T20 cricket, you're meant to go out there from ball one.

"So, no matter the conditions, we're still going to go out there and try and take it to them."

BBC Radio 5 Sports Extra

By the way, you can listen to ball-by-ball coverage of this match live on BBC Radio 5 Sports Extra, or by clicking the play icon at the top of this page.

Enjoy!

Defending champions Australia await in the final.

The holders reached their seventh consecutive Women's T20 World Cup final with a tense five-run win over India.

But it was a game of thrills, and a few spills, with Meg Lanning's side on the ropes towards the end of India's chase.

Australia held their nerve in the closing moments and are one win away from a third consecutive world T20 victory, to go with their 50-over title and Commonwealth Games triumph.

Read all about it right here.

England captain Heather Knight: "I was going to bat as well but I was a bit on the fence. It's a little on the dry side so hopefully our spinners can use that and hopefully we can keep them to a low total.

"We try to keep that positive mentaliy going no matter the game or the opposition. The message is the same - put our best foot forward and try to entertain the crowd.

"It's normal for our youngsters to play in front of big crowds, they play in the Hundred and in internationals around the world. The crowd will be backing South Africa but we've got a good family contingent here and they'll shout loud for us."

Ffion Wynne
BBC Sport in Cape Town

It's a good toss for South Africa to win because they are not a team that copes particularly well under pressure, so I can see why they wouldn't fancy a chase in a World Cup semi-final.

It's a good pitch, too - Australia practically strolled to 170 on it yesterday.

But South Africa's strength is in their bowling, so Sune Luus will be keen to unleash the likes of Marizanne Kapp and Shabnim Ismail at England's top order that has been relatively inconsistent - not including Nat Sciver-Brunt.

It's another warm day at Newlands with the crowd gradually starting to fill up - as much as it can in the middle of the afternoon, anyway.

South Africa captain Sune Luus: "Obviously it is a used wicket and some runs on the board in the semi-final is always good.

"To be in the semi-final of any World Cup is a very special occasion. Hopefully we can make the most of it today.

"It is going to be a good match-up."

On her hope for large home support: "I hope they are knocking off [work] at 2pm!"

South Africa are unchanged, while England welcome back Lauren Bell with fellow pacer Freya Davis missing out.

Newlands is looking glorious in the sun by the way.

England: Danni Wyatt, Sophia Dunkley, Alice Capsey, Nat Sciver-Brunt, Heather Knight, Amy Jones, Katherine Sciver-Brunt, Sophie Ecclestone, Sarah Glenn, Charlie Dean, Lauren Bell.

South Africa: Laura Wolvaardt, Tazmin Brits, Marizanne Kapp, Sune Luus, Chloe Tryon, Anneke Bosch, Nadine de Klerk, Sinalo Jafta, Shabnim Ismail, Ayabonga Khaka, Nonkululeko Mlaba.