Princess Olympia is identical to Paris Hilton in low-slung jeans and bejewelled tank top

Princess Olympia in grey velvet dress
Princess Olympia of Greece and Denmark attends The National Portrait Gallery's Portrait Gala (Getty)

Princess Olympia of Greece was truly unrecogisable as she partied the night away on Friday dressed as a familiar face.

The New York-born Greek princess, 27, was spotted on Instagram dressed as Paris Hilton for a 90-themed party alongside Harry Styles' model ex Camille Rowe and Alexia Mavroleon, an artist who comes from a family of Greek shipping magnates.

Princess Olympia dressed up as Paris Hilton
Princess Olympia dressed up as Paris Hilton (Instagram)

Crown Princess Marie-Chantal's daughter was seen wearing a pair of low-rise dark wash jeans with a bejewelled 'Butterfly Party Rhinestone Cropped Vest' from Ed Hardy, a style which remained popular amongst 'It' girls well into the noughties.

Princess Olympia dressed as Paris Hilton with Harry Styles' ex Camille Rowe
Princess Olympia partied with Harry Styles' ex Camille Rowe (Instagram)

Her unexpected ab-baring ensemble was teamed with the equally unroyal 'Skull Blossom Trucker Cap' from Ed Hardy which allowed a short side ponytail to peep out.

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For accessories, the royal carried the 'Tilly' bag from Celine in a fitting 90s-appropriate leopard print and even held a dog stuffed animal to emulate Paris Hilton's style.

Olympia's Ascot style

Crown Princess Pavlos' Paris-coded look was a far cry from her usual style. Olympia was seen alongside her mother at Royal Ascot where she looked beautiful in the 'Dellah' dress by Emilia Wickstead.

Princess Olympia and Crown Princess Marie-Chantal were seen at Royal Ascot
Princess Olympia and Crown Princess Marie-Chantal were seen at Royal Ascot (Instagram)

Her chosen dress featured a classic A-line cut fit for a 1950s star, a round neckline was made from a lemon cloque fabric.

The model teamed her sunshiney look with the 'Cœur 60 Blanc Optique Slingback Pumps' from Alaia which were perspex with an opaque white heart on the toe. In true Ascot style, Olympia also rocked a yellow hat.

Crown Princess Marie-Chantal of Greece and Crown Prince Pavlos of Greece attended the Coronation of King Charles III and Queen Camilla
Crown Princess Marie-Chantal previously wore the dress to a reception at Buckingham Palace for overseas guests ahead of the Coronation of King Charles III and Queen Camilla (Getty)

Meanwhile, her mother was elegant in a fluted sleeve dress from Mary Katrantzou and a majestic Philip Treacy hat.

A royal in jeans

Princess Maria-Olympia posing in jeans
Princess Maria-Olympia wore jeans to the Malone Souliers x Tabitha Simmons Collection Launch (Getty)

Olympia was last spotted in jeans when she attended the Malone Souliers x Tabitha Simmons Collection Launch at Seashell of Lisson Grove in May.

Princess Olympia laughing with Alexia Mavroleon, Jessica Clarke, Emilia Wickstead and Poppy Delevingne
Princess Olympia laughed with Alexia Mavroleon, Jessica Clarke, Emilia Wickstead and Poppy Delevingne (Getty)

The Princess of Greece and Denmark styled a pair of mid-wash mom jeans with a sheer light brown shirt covered in a leaf print and satin slingbacks.

Princess Olympia drinking wine at table with Lady Lola Bute and Poppy Delevigne
Olympia enjoyed an evening with Lady Lola Bute Seashell of Lisson Grove (Getty)

She was spotted sipping wine with Lady Lola Bute, Alexia Mavroleon, Jessica Clarke, Emilia Wickstead and Poppy Delevingne.

Levelling up

Princess Olympia posing on wall in apple green green
Princess Olympia dazzled in apple green (Getty)

The Princess ditched her jeans in favour of a dazzling apple green slip dress when she attended the Bulgari Allegra Chill & Sole cocktail and dinner party at Syon Park Conservatory on 8 May.

Princess Olympia posed with Jacques Cavallier and Jonathan Brinbaum at the Bulgari Allegra Chill & Sole Cocktail and Dinner Party
Princess Olympia posed with Jacques Cavallier and Jonathan Brinbaum at the Bulgari Allegra Chill & Sole Cocktail and Dinner Party (Getty)

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The embellished dress was teamed with diamond jewellery and gold strappy heels.