Princess Maria-Olympia of Greece (centre) donned a strapless, tartan mini-dress and danced the night away at Greek shipping heiress Electra Niarchos's 30th birthday party in Scotland this weekend. She is seen here with Camille Rowe and entrepreneur Evangelo Bousis

It appears that ‘the world’s most eligible single’ is now off the market as Princess Maria-Olympia of Greece has found love again after splitting from artistocrat Peregrine Pearson. 

The 28-year-old socialite and model, who is King Charles’ goddaughter, was part of an exclusive guest list for Greek shipping heiress Electra Niarchos’s 30th birthday party in Scotland this weekend. 

Princess Olympia opted to wear a sleeveless tartan mini-dress with a spiked tiara in a nod to the event’s ‘Tartan Punk Creatures’ theme while partying the night away with her new boyfriend, Argentinian businessman Martin Pacanowski. 

The daughter of Prince Pavlos and Princess Marie-Chantal was first linked to the dashing hotelier last March, after Olympia and Peregrine ended their three-year relationship. 

Peregrine, who is the son of Viscount Cowdray and among Britain’s most eligible men, has since found love with American actress, the Game of Thrones star Sophie Turner. 

At the time, The Daily Mail’s Richard Eden reported that Olympia and Martin have ‘known each other for a very long time and get on extremely well’ – and sparks were certainly flying between the two at Electra’s Scottish birthday celebrations. 

Fresh from their recent holiday in Greece with Olympia’s family, the couple were inseparable at Electra’s 30th birthday festivities as the who’s who of European aristocracy and fashion royalty wore kilts and spiked chokers for a night of punk partying. 

Held at the historic Barnbougle Castle just outside Edinburgh, the party’s most high-profile attendees included Jemma Kidd – the model ex-wife of the Earl of Mornington – fashion darling Camille Rowe and Russian art collector and ex-wife of Roman Abramovich, Dasha Zhukova. 

Princess Maria-Olympia of Greece (centre) donned a strapless, tartan mini-dress and danced the night away at Greek shipping heiress Electra Niarchos's 30th birthday party in Scotland this weekend. She is seen here with Camille Rowe and entrepreneur Evangelo Bousis

Princess Maria-Olympia of Greece (centre) donned a strapless, tartan mini-dress and danced the night away at Greek shipping heiress Electra Niarchos’s 30th birthday party in Scotland this weekend. She is seen here with Camille Rowe and entrepreneur Evangelo Bousis 

Tart it up! Electra's guests pose for pictures at the venue - the historic Barnbougle Castle - that was covered in tartan. From left to right: art advisor and curator Artemis Baltoyanni, jewellery designer Noor Fares, Russian art collector and ex-wife of Roman Abramovich Dasha Zhukova, Electra's sister Eugenie, and Italian aristocrat Bianca Brandolini

Tart it up! Electra’s guests pose for pictures at the venue – the historic Barnbougle Castle – that was covered in tartan. From left to right: art advisor and curator Artemis Baltoyanni, jewellery designer Noor Fares, Russian art collector and ex-wife of Roman Abramovich Dasha Zhukova, Electra’s sister Eugenie, and Italian aristocrat Bianca Brandolini

Bianca, 38, with fashion darling Camille Rowe, who paired a yellow tartan mini with YSL’s towering Bianca platform heels

Bianca, 38, with fashion darling Camille Rowe, who paired a yellow tartan mini with YSL’s towering Bianca platform heels

The castle, on the edge of the Firth of Forth, is owned by the aristocratic Rosebery family and once belonged to the eccentric 5th Earl of Rosebery – a former Prime Minister who famously kept parrots, slept in a tent, and entertained Winston Churchill.

With its wood-panelled halls, grand turrets and dramatic sea views, it offered the perfect setting for a decadent night of high society mischief.

The birthday girl Electra – daughter of billionaire art collector Philip Niarchos – embraced the theme in a midriff-baring tartan co-ord with fluted sleeves, a dramatic train and spiked neck collar.

She was joined by all her siblings, including older brother Theo Niarchos and his fiancee Camille, the French-American model and fashion darling, who paired a yellow tartan mini with YSL’s towering Bianca platform heels and a vintage fur stole.

Dasha, 44, the Russian-born art collector and fashion investor, flew in with her husband Stavros Niarchos III, Electra’s brother and a fixture of the international jet set.

Dasha, formerly married to ex-Chelsea FC owner Abramovich, wore a backless tartan gown and giggled while posing for pictures with Italian aristocrat Bianca Brandolini, 38.

Bianca posted photos from the party on Instagram, with the caption: ‘She said “tart it up”. So we did. Happiest birthday my Electra Niarchos, you really punked us.’

She later posed with jewellery designers Noor Fares and Electra’s sister Eugenie inside a tartan-draped marquee lit by strobes, where guests danced into the early hours.

Guests included (left to right) Flynn Busson - son of supermodel Elle Macpherson and financier Arpad Busson - as well as Olympia's brother, Achileas of Greece (centre) and her boyfriend, Argentian businessman Martin Pacanowski (far right)

Guests included (left to right) Flynn Busson – son of supermodel Elle Macpherson and financier Arpad Busson – as well as Olympia’s brother, Achileas of Greece (centre) and her boyfriend, Argentian businessman Martin Pacanowski (far right) 

Bianca with Electra as the Scottish castle was transformed for the birthday's 'Tartan Punk Creatures' theme. The daughter of billionaire art collector Philip Niarchos - picked a midriff-baring tartan co-ord with fluted sleeves, a dramatic train and spiked neck collar.

Bianca with Electra as the Scottish castle was transformed for the birthday’s ‘Tartan Punk Creatures’ theme. The daughter of billionaire art collector Philip Niarchos – picked a midriff-baring tartan co-ord with fluted sleeves, a dramatic train and spiked neck collar.

Italian fashion designer Anastasia Ostrowsky showing off her tartan-inspired outfit for Electra's party

Italian fashion designer Anastasia Ostrowsky showing off her tartan-inspired outfit for Electra’s party 

A neon sign that reads 'Tart It Up' at Electra's glam birthday party

A neon sign that reads ‘Tart It Up’ at Electra’s glam birthday party

Electra with her older sister Eugenie at the castle on the edge of the Firth of Forth

Electra with her older sister Eugenie at the castle on the edge of the Firth of Forth

Birthday girl Electra was all-smiles as she posed in her glamorous ensemble

Birthday girl Electra was all-smiles as she posed in her glamorous ensemble

A glimpse inside the historic castle that was transformed for Electra's Scottish soiree

A glimpse inside the historic castle that was transformed for Electra’s Scottish soiree

Also in the crowd was Flynn Busson – son of supermodel Elle Macpherson and financier Arpad Busson – who wore green tartan trousers and a black suit jacket. 

He was joined by his dad and his dad’s girlfriend, the former model and beauty entrepreneur Jemma Kidd – sister of Nineties catwalk queen, Jodie Kidd.

Guests embraced the theme with punk veils, studded chokers, leather corsets, chainmail, and more tartan than a Highland wedding. 

Fashion designer Peter Dundas – known for dressing Madonna, Beyonce and Kim Kardashian – wore a custom kilt and metallic body armour, while socialites layered lace, fishnet and PVC with plaid skirts and harnesses.

Olympia’s brother, Achileas of Greece, was joined by a crew of sharply dressed aristocrats in mix-and-match tartan, sporrans and sunglasses.

Inside the castle, tartan tents, tartan walls, tartan tablecloths – and of course, tartan outfits – set the scene for a night of unfiltered revelry.

Olympia was first spotted with her Argentinian beau at a London party last March, when the then-rumoured couple were photographed arm-in-arm together on the red carpet. 

However, she was also linked to celebrity chef Thomas Straker a few months prior in November 2023 when they were spotted leaving Olympia’s Notting Hill home together. 

The daughter of Prince Pavlos and Princess Marie-Chantal was first linked to the dashing hotelier last March, after Olympia and Peregrine ended their three-year relationship

The daughter of Prince Pavlos and Princess Marie-Chantal was first linked to the dashing hotelier last March, after Olympia and Peregrine ended their three-year relationship

The Daily Mail's Richard Eden reported that Olympia and Martin have 'known each other for a very long time and get on extremely well' - and sparks were certainly flying between the two at Electra's Scottish birthday celebrations. Here, they are seen attending a London party last March

The Daily Mail’s Richard Eden reported that Olympia and Martin have ‘known each other for a very long time and get on extremely well’ – and sparks were certainly flying between the two at Electra’s Scottish birthday celebrations. Here, they are seen attending a London party last March 

Thomas, 35, whose cooking videos went viral on social media during the pandemic, shares two daughters with his actress wife Davina Pownall after the couple tied the knot in Wiltshire in 2015. 

At the time, MailOnline reported news of Thomas’s alleged infidelity had left Davina ‘devastated’ according to friends of the couple. 

Before making her relationship with Martin – whose family owns the luxurious CasaSur hotel chain in Argentina – Olympia dated the son and heir of Michael Pearson, 4th Viscount Cowdray – whose family has a reputed £224million fortune – for three years.

Peregrine’s father owns a significant portion of the Pearson media empire as well as the 16,500-acre Cowdray Park estate in West Sussex.

It is home to Cowdray Park polo club, where Princes William and Harry have played.

Having moved away from her former family home in Cheyne Walk, Chelsea, Olympia now lives in Notting Hill with her sausage dog, Echo, who she adopted during the coronavirus lockdown.

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