Maya Jama swapped her green Traitors cloak for a burgundy ball gown for Saturday night's British Museum Ball.
The TV star, 32, currently starring in Celebrity Traitors, looked stunning in her ruffled dress, which she teamed with a beaded choker necklace.
The theme for the London landmark's second annual ball was red, celebrating the earliest pigment known to have been used by humans in artistic expression.
And Emma Thynn adhered to the dress code, wowing in a scarlet gown.
The Marchioness of Bath, 40, showed off her long legs and matching heels with the gown's daring thigh-high split as she posed outside.
Mick Jagger, 83, and his partner Melanie Hamrick, 39, deviated from the colour memo though.
Maya Jama swapped her green Traitors cloak for a burgundy ball gown for Saturday night's British Museum Ball
The theme for the second annual ball was red, celebrating the earliest pigment known to have been used by humans in artistic expression. Emma Thynn adhered to the dress code
The rocker added a flash of red with a silk handkerchief in the pocket of his white blazer, whilst Melanie looked stunning in gold, with a dash of red lipstick.
The red lippie was the same trick used by Sally Humphreys Wood who clashed her pink dress with a red pout.
Sally, 48, arrived on the arm of Sir Mick's bandmate Ronnie Wood, 79, who accessorised his black velvet suit with red trainers.
Award-winning artist and designer Es Devlin was the Artistic Director for the 2026 British Museum Ball.
This year's Ball celebrates three global milestones for the museum: the loan of the Bayeux Tapestry from France, a special display marking the 250th anniversary of the United States and a landmark exhibition exploring 2,000 years of Korean creativity.
Red is a unifying thread woven through all three of the Museum's upcoming displays, from the embroidered wool of the Tapestry, the stripes of the American flag to the rich hues found across centuries of Korean art.
Proceeds from this year's Ball will support the British Museum's redevelopment project, helping to reimagine the Museum for generations to come.
As part of the Museum's commitment to widening access for young people, additional donations will support the Museum in providing a free packed lunch for every school child visiting The Bayeux Tapestry as part of an organised school trip.
Mick Jagger, 83, and his partner Melanie Hamrick, 39, deviated from the colour memo though
The red lippie was the same trick used by Sally Humphreys Wood who clashed her pink dress with a red pout, pictured with Ronnie Wood
Maya looked stunning in her ruffled dress, which she teamed with a statement beaded choker necklace
Maya posed outside the London landmark in her stunning dress
Maya is currently impressing viewers on the second series of Celebrity Traitors, managing to hold onto her green cloak after turning on two of her fellow Traitors.
The Love Island host has been embracing her inner villain as one of the Traitors on the BBC show, and so far has avoided any suspicion from the Faithfuls.
Maya was chosen by host Claudia Winkleman as a Traitor alongside Richard E Grant, but the veteran actor made a huge slip-up that led to him becoming the first player to be banished, with Maya among those to vote for the actor.
Then it was Professor Hannah Fry's turn as she came under fire at the round table after being recruited by Maya and comedian James Acaster.
Maya spoke out on her time in the castle in a TikTok video shared last week.
She confessed she had no idea that both James and Hannah had said they didn't want to be Traitors, and if she'd known she would never have suggested to Richard they recruit them.
Lottie Moss arrived in a crimson, one-of-one gown created especially for her by London designer GYUNEL
Benedict Cumberbatch arrived with his wife Sophie Hunter, who chose a red ribon adorned black dress
Bianca Jagger wowed in a tulle black dress and fur-collared coat, added a slick of red lipstick
Gwendoline Christie looked striking in her wine-coloured dress, clutching a red rose
Grayson Perry got the red memo, dressed head-to-toe in the colour including a polka dot umbrella
Actress and writer Cush Jumbo stood out in her racy latex dress
Model and fashion icon Erin O'Connor wowed in a sculptual gown with red fringing
Lesley Manville looked gorgeous in a red lace number for her night at the museum
Lady Kitty Spencer teamed her stunning cape dress with dazzling jewels
Bill Nighy looked in the mood to party at the London landmark
Philip Treacy arrived with actress Natasha Lyonne, who teamed her red dress with a statement design from the famed milliner
She said: 'I think enough time's passed and I can talk about some stuff without it being a spoiler.
'So starting with this, I had no idea that James and Hannah didn't want to be a Traitor because what you're seeing on TV is the interview with Claudia, and obviously if I knew that I would never have agreed to recruit them because that's just stupid.
'I get it, we're making the best of a bad situation at this point, and I am stressed.'
Sharing her experience on the show, Maya added: 'As you can tell I was trying to have fun but it is intense and when you are a Traitor you're going to bed late because you're in the turret.
'So I was on minimal sleep from day one because I'm the only OG left.
'And I didn't even wash my hair! From episode four, I hadn't washed my hair because I had no time in the mornings. I wanted more sleep than I wanted to do glam.'
Maya also reflected on the moment viewers saw her unknowingly walk into the room while Sebastian Croft was discussing whether she was a Traitor.
She said: 'Because there are so many things that you don't know.
'Conversations that were happening behind your back. Me walking in on Bash talking about me. No idea. And yeah, it's just, it's such a wild, wild