Caspar Jopling left Chiltern Firehouse with Ellie Goulding lookalike Cosima Vesey after partying with his ex-wife at the star-studded event on Thursday.
The art dealer, 33, is said to be dating Olivia Wilde after the pair were spotted kissing earlier this month, with Ellie, 38, having also moved on with her new man, actor Beau Minniear, 28.
Proving their still on good terms, former couple Ellie and Caspar joined a host of celebrity guests to celebrate the reopening of the venue as London Fashion Week kicked off in the city.
Departing at the party, hosted by Mert Alas and Seventy One Gin, Caspar and socialite Cosima flagged down a taxi at 4am.
Cosima is the daughter of the 7th Viscount de Vesci and great niece of the Earl of Snowdon, she shares a son Ivo Vesey, eight, with Chiltern Firehouse owner André Balazs, although is has been claimed that they’re ‘not attached.’
André previously had an on/off romance with Uma Thurman, they dated for three years before splitting in 2007 but reunited in 2015 before breaking up again in 2016.

Caspar Jopling left Chiltern Firehouse with Ellie Goulding lookalike Cosima Vesey after partying with his ex-wife at the star-studded event on Thursday

The art dealer, 33, is said to be dating Olivia Wilde after the pair were spotted kissing earlier this month, but flagged down a taxi at 4am with socialite Cosima
Caspar also opted for an all-black outfit for the event, pairing a bomber jacker with trousers and Nike trainers.
Cosima, who bears a resemblance to his ex-wife Ellie, wore a polka dot mini dress and peep toe heels.
Meanwhile, Ellie wore a black, sheer blouse which she teamed with a pair of smart shorts and platform heels as she walked arm-in-arm with a friend.
Chiltern Firehouse was badly damaged by a large fire in February, with a limited number of guests being invited back inside for the first time this week.
Earlier this month, Caspar was spotted kissing Olivia Wilde in London. They later made their first public outing together at W Magazine’s New York Fashion Week party this week.
Caspar and Olivia are said to have been dating since July with the pair enjoying a series of ‘under the radar’ in Notting Hill.
They spent three hours having a meal and drinking red wine at The Pelican restaurant in the West London enclave before their passionate embrace outside the venue.
Sources said Caspar is an investor in the restaurant and its nearby sister pub, The Fat Badger, allowing him to date Olivia in relative privacy.

Proving their still on good terms, former couple Ellie and Caspar joined a host of celebrity guests to celebrate the reopening of the venue as London Fashion Week kicked off in the city

Earlier this month, Caspar was spotted kissing Olivia Wilde in London. They later made their first public outing together at W Magazine’s New York Fashion Week party this week

Ellie wore a black, sheer blouse which she teamed with a pair of smart shorts and platform heels as she walked arm-in-arm with a friend to Chiltern Firehouse (pictured arriving)
The source told Daily Mail: ‘Those pubs have allowed Caspar to date a world-famous actress under the radar for months.
‘They always manage to get the best tables – little concealed spots in dark corners reserved for celebrities.
‘They tend to go to The Fat Badger for date nights because it’s an invitation-only pub, with a secret smoking terrace upstairs.’
Olivia previously dated pop star Harry Styles after breaking off her seven-year engagement to Ted Lasso star Jason Sudeikis, with whom she has two children.
Notting Hill was also where Ellie was seen on a date with her new boyfriend, 28-year-old American actor Beau Minniear, who is ten years her junior.
According to The Sun Ellie is thought to have met actor Beau – who has a string of small acting parts in TV and film in the US – earlier this year.
In July she reportedly teased a romance with him with a cryptic TikTok video posted to her socials.
The publication claims she shared a clip stroking a man’s arm, with the caption: ‘Just a little something to take the edge off.’ The video is no longer on her TikTok account.
Her fans reportedly noticed that the watch the man was wearing in the clip matched one Beau regularly wears in Instagram snaps.
They also reportedly spotted that the pair both posted photos from the same hotel in Florence – before attending a boxing match together.
A source told the publication: ‘Ellie is into Beau and they have a lot of shared interests like exercise and art. They’ve been having fun together and they certainly make for an attractive couple.’
A representative for Ellie has been contacted by the Daily Mail for comment.

Caspar and Ellie split last year after nearly five years of marriage and share four-year-old Arthur (pictured in June 2023)

Ellie was seen on a date with her new boyfriend, 28-year-old American actor Beau Minniear, who is ten years her junior, a two weeks ago
Born in Yorkshire and educated at Eton, Caspar’s father is the Honourable Nicholas Jopling, whose own father is politician Thomas Michael Jopling, a member of the House of Lords.
His uncle, who no doubt inspired his career, is renowned art dealer Jay Jopling who runs online art platform Paddle 8, where Capsar’s pal Princess Eugenie worked in New York, before moving back to London.
Jay was previously married to director Sam Taylor Johnson, with whom he shares daughters Jessie, 18, and Angelica, 27.
Caspar’s parents divorced and his mother Jayne Warde-Aldam went on to wed Charles Andrew Warde-Aldam.
The aristocratic family own Grade II listed building Frickley Hall, which dates back to 1760. Well known in equestrian circles they host their very own Frickley Horse Trials.