Lily James stunned as she joined her Lyonesse co-star Kristin Scott Thomas at Browns in Covent Garden, London after the press night performance of the play.
The Pam & Tommy star, 34, looked radiant in a pale green off-the-shoulder gown while smiling beside Kristin, 63, as they celebrated the show.
She elevated her height with a pair of black stiletto heels and pulled her hair back into a neat updo to complete her look.
Kristin looked equally as chic in a violet blouse that she tucked into a matching A-line skirt.
The Oscar-winning actress topped off her outfit off with some opaque stockings and patent heeled shoes.
![Lily James and Kristin Scott Thomas grace press night in stunning fashion attire 2 Party: Lily James, 34, stunned as she joined her Lyonesse co-star Kristin Scott Thomas, 63, at Browns in Covent Garden, London after the press night performance of the play](https://i.dailymail.co.uk/1s/2023/10/26/01/77010313-12673511-image-a-19_1698280657420.jpg)
Party: Lily James, 34, stunned as she joined her Lyonesse co-star Kristin Scott Thomas, 63, at Browns in Covent Garden, London after the press night performance of the play
![Lily James and Kristin Scott Thomas grace press night in stunning fashion attire 4 On stage: Earlier in the night, the duo took to the stage at the Harold Pinter Theatre in London for the opening night of Penelope Skinner’s Lyonesse](https://i.dailymail.co.uk/1s/2023/10/26/01/77010337-12673511-image-a-20_1698280941052.jpg)
On stage: Earlier in the night, the duo took to the stage at the Harold Pinter Theatre in London for the opening night of Penelope Skinner’s Lyonesse
Earlier in the night, the duo took to the stage at the Harold Pinter Theatre in London for the opening night of Penelope Skinner’s Lyonesse.
The production follows the story of Elaine (played by Kristin), a reclusive and talented actress, who disappears in mysterious circumstances.
30 years later she enlists the help of a young film executive named Kate (played by Lily) to assist with her comeback.
Lyonesse takes place at Elaine’s home in Cornwall and raises questions about who really controls the stories that we tell.
The Daily Mail’s Patrick Marmion gave Lyonesse three stars out of five, describing it as ‘a curious mishmash of Sunset Boulevard and Ab Fab.’
The play will run until December 23 at the Harold Pinter Theatre in London.
It comes after Lily revealed her latest role as an ambassador for ethical diamonds.
The actress, who is already the face of Charlotte Tilbury and Sky Mobile, has lent her name to the Natural Diamond Council and visited Botswana, where the jewels are sourced.
![Lily James and Kristin Scott Thomas grace press night in stunning fashion attire 6 Stylish: The Pam & Tommy star looked radiant in a pale green off-the-shoulder gown](https://i.dailymail.co.uk/1s/2023/10/26/01/77011415-12673511-image-m-26_1698281572081.jpg)
![Lily James and Kristin Scott Thomas grace press night in stunning fashion attire 8 Stunning: She elevated her height with a pair of black stiletto heels](https://i.dailymail.co.uk/1s/2023/10/26/01/77011413-12673511-image-a-27_1698281578338.jpg)
Stylish: The Pam & Tommy star looked radiant in a pale green off-the-shoulder gown
![Lily James and Kristin Scott Thomas grace press night in stunning fashion attire 10 Radiant: The actress pulled her hair back into a chic updo to complete her look](https://i.dailymail.co.uk/1s/2023/10/26/01/77011411-12673511-image-a-25_1698281568060.jpg)
Radiant: The actress pulled her hair back into a chic updo to complete her look
![Lily James and Kristin Scott Thomas grace press night in stunning fashion attire 12 Elegant: Kristin looked equally as chic in a violet blouse that she tucked into a matching A-line skirt](https://i.dailymail.co.uk/1s/2023/10/26/01/77010327-12673511-image-a-28_1698281591441.jpg)
Elegant: Kristin looked equally as chic in a violet blouse that she tucked into a matching A-line skirt
![Lily James and Kristin Scott Thomas grace press night in stunning fashion attire 14 Glowing: The Oscar-winning actress topped off her outfit off with a soft makeup look](https://i.dailymail.co.uk/1s/2023/10/26/01/77010331-12673511-image-a-29_1698281664333.jpg)
Glowing: The Oscar-winning actress topped off her outfit off with a soft makeup look
![Lily James and Kristin Scott Thomas grace press night in stunning fashion attire 16 Play: The production follows the story of Elaine (played by Kristin), a reclusive and talented actress, who disappears in mysterious circumstances](https://i.dailymail.co.uk/1s/2023/10/26/01/77010339-12673511-image-a-21_1698281525669.jpg)
Play: The production follows the story of Elaine (played by Kristin), a reclusive and talented actress, who disappears in mysterious circumstances
![Lily James and Kristin Scott Thomas grace press night in stunning fashion attire 18 Plot: 30 years later she enlists the help of a young film executive named Kate (played by Lily) to assist with her comeback](https://i.dailymail.co.uk/1s/2023/10/26/01/77010341-12673511-image-a-30_1698281729488.jpg)
Plot: 30 years later she enlists the help of a young film executive named Kate (played by Lily) to assist with her comeback
![Lily James and Kristin Scott Thomas grace press night in stunning fashion attire 20 Story: Lyonesse takes place at Elaine's home in Cornwall and raises questions about who really controls the stories that we tell (Lily pictured with James Corrigan)](https://i.dailymail.co.uk/1s/2023/10/26/02/77011533-12673511-image-a-36_1698282013258.jpg)
Story: Lyonesse takes place at Elaine’s home in Cornwall and raises questions about who really controls the stories that we tell (Lily pictured with James Corrigan)
Lily struck a series of poses for the NDC’s new campaign shot in New York City, showing off her jewellery with four different outfits.
In one picture, she wears a chic black dress with a diamond choker, ring, bangles, and earrings.
She follows in the footsteps of Bond girl Ana de Armas, the previous face of the brand.
Ms James said: ‘After visiting Botswana and seeing the positive impact the diamond mining industry has on the surrounding communities and ecosystems… It made me want to be even more intentional with the diamond jewellery I wear.
‘I love to go full out on the red carpet but also pare my diamond jewellery down and wear it with jeans.’
In a separate behind-the-scenes video of the project, the actress, who has served as the council’s global ambassador since September last year, added: ‘Botswana was so inspiring on so many levels. It was the trip of a lifetime. I went with my mother and it was really special.
![Lily James and Kristin Scott Thomas grace press night in stunning fashion attire 26 Review: The Daily Mail's Patrick Marmion gave Lyonesse three stars out of five, describing it as 'a curious mishmash of Sunset Boulevard and Ab Fab'](https://i.dailymail.co.uk/1s/2023/10/26/01/77010317-12673511-image-a-32_1698281762727.jpg)
Review: The Daily Mail’s Patrick Marmion gave Lyonesse three stars out of five, describing it as ‘a curious mishmash of Sunset Boulevard and Ab Fab’
![Lily James and Kristin Scott Thomas grace press night in stunning fashion attire 28 Keeping warm: Lily later layered over a black blazer as she departed the venue](https://i.dailymail.co.uk/1s/2023/10/26/02/77011525-12673511-image-a-51_1698282258587.jpg)
![Lily James and Kristin Scott Thomas grace press night in stunning fashion attire 30 Successful night: She looked incredible in her chic gown](https://i.dailymail.co.uk/1s/2023/10/26/02/77011523-12673511-image-m-50_1698282252209.jpg)
Keeping warm: Lily later layered over a black blazer as she departed the venue
![Lily James and Kristin Scott Thomas grace press night in stunning fashion attire 32 Celebrations: Penelope Skinner, Kristin, Lily James and Director Ian Rickson posed for a photo together](https://i.dailymail.co.uk/1s/2023/10/26/02/77011531-12673511-image-a-52_1698282365572.jpg)
Celebrations: Penelope Skinner, Kristin, Lily James and Director Ian Rickson posed for a photo together
![Lily James and Kristin Scott Thomas grace press night in stunning fashion attire 34 Beaming: Lily looked elated as Doon Mackichan pulled her into a tight hug](https://i.dailymail.co.uk/1s/2023/10/26/02/77011529-12673511-image-a-53_1698282465361.jpg)
Beaming: Lily looked elated as Doon Mackichan pulled her into a tight hug
![Lily James and Kristin Scott Thomas grace press night in stunning fashion attire 36 All smiles: Lily was joined at the event by Gala Gordon](https://i.dailymail.co.uk/1s/2023/10/26/01/77011417-12673511-image-a-31_1698281752211.jpg)
All smiles: Lily was joined at the event by Gala Gordon
![Lily James and Kristin Scott Thomas grace press night in stunning fashion attire 38 Bash: They were joined at the event by (L-R) Kwame Owusu, Director Ian Rickson, Sara Powell, Doon Mackichan and James Corrigan](https://i.dailymail.co.uk/1s/2023/10/26/01/77010321-12673511-image-a-33_1698281779027.jpg)
Bash: They were joined at the event by (L-R) Kwame Owusu, Director Ian Rickson, Sara Powell, Doon Mackichan and James Corrigan
![Lily James and Kristin Scott Thomas grace press night in stunning fashion attire 40 Out now: The play will run until December 23 at the Harold Pinter Theatre in London](https://i.dailymail.co.uk/1s/2023/10/26/01/77010319-12673511-image-a-34_1698281781932.jpg)
Out now: The play will run until December 23 at the Harold Pinter Theatre in London
![Lily James and Kristin Scott Thomas grace press night in stunning fashion attire 42 Guests: Toby Jones stepped out to watch the play](https://i.dailymail.co.uk/1s/2023/10/26/02/77011535-12673511-image-a-37_1698282061995.jpg)
Guests: Toby Jones stepped out to watch the play
![Lily James and Kristin Scott Thomas grace press night in stunning fashion attire 44 Chic: Gugu Mbatha Raw opted for a Autumnal wool coat](https://i.dailymail.co.uk/1s/2023/10/26/02/77011539-12673511-image-m-41_1698282099044.jpg)
![Lily James and Kristin Scott Thomas grace press night in stunning fashion attire 46 Pose: Rebekah Staton also wore a checked long coat](https://i.dailymail.co.uk/1s/2023/10/26/02/77011547-12673511-image-a-42_1698282108043.jpg)
Chic: Gugu Mbatha Raw opted for a Autumnal wool coat while Rebekah Staton also wore a checked long coat
![Lily James and Kristin Scott Thomas grace press night in stunning fashion attire 48 Fashion: Jemima Khan caught the eye in a black sweater with high waisted trousers and a statement belt](https://i.dailymail.co.uk/1s/2023/10/26/02/77011541-12673511-image-a-43_1698282177532.jpg)
Fashion: Jemima Khan caught the eye in a black sweater with high waisted trousers and a statement belt
![Lily James and Kristin Scott Thomas grace press night in stunning fashion attire 50 Support: Hannah Waddingham looked as fashionable as ever in a sleek black blazer as she departed the theatre](https://i.dailymail.co.uk/1s/2023/10/26/02/77011521-12673511-image-a-54_1698282518579.jpg)
Support: Hannah Waddingham looked as fashionable as ever in a sleek black blazer as she departed the theatre
![Lily James and Kristin Scott Thomas grace press night in stunning fashion attire 52 Dazzling: It comes after Lily revealed her latest role as an ambassador for ethical diamonds](https://i.dailymail.co.uk/1s/2023/10/26/01/75788403-12673511-Dazzling_Lily_James_is_gleaming_in_her_latest_role_as_an_ambassa-a-35_1698281851064.jpg)
Dazzling: It comes after Lily revealed her latest role as an ambassador for ethical diamonds
She added: ‘I was fortunate enough to go to these amazing schools and talk to the kids and hear the teachers talk about how the roads have changed and all the hospitals they now have access to.’
The campaign comes after diamond jewellery sales plummeted from pandemic highs and as competition from lab-grown diamonds rises.
While diamonds from Africa have, in large part, had a horrific history, the NDC has tried to reinvent the industry with its ethical narrative. However, it has come under fire for ‘flawed’ claims about the carbon footprint of mined diamonds compared with that of lab diamonds.