Poppy Delevingne stuns in a sequinned rose gold evening gown alongside sister Chloe and Princess Olympia of Greece as she celebrates the anniversary of her Prosecco brand

Poppy Delevingne stunned on Saturday in a sequinned rose gold evening gown as she hosted a dinner to celebrate the anniversary of her Prosecco brand. 

The model, 37, hosted a glamorous bash at the IHG's InterContinental Hotel on London's swanky Park Lane alongside a sweep of famous guests. 

Poppy looked glamorous in the shiny number from Reformation, which was held up by tiny straps and clung to her slim figure, while the nude colour flattered her flawless skin. 

She opted for a sleek half-up, half-down hairstyle and style her iconic Delevingne blonde locks into light waves. 

Poppy was celebrating the third anniversary of her vegan Prosecco brand Della Vite with the InterContinental London Park Lane as part of their Incredible Occasion series.

Glitz and glam: Poppy Delevingne stunned on Saturday in a the 'Bevelyn Dress' - a sequinned rose gold evening gown from Reformation as she hosted a dinner to celebrate the anniversary of her Prosecco brand

Glitz and glam: Poppy Delevingne stunned on Saturday in a the 'Bevelyn Dress' - a sequinned rose gold evening gown from Reformation as she hosted a dinner to celebrate the anniversary of her Prosecco brand

Glamorous hostess: Poppy was celebrating the third anniversary of her vegan Prosecco brand Della Vite, which she founded in August 2020 with sisters Chloe and Cara

Glamorous hostess: Poppy was celebrating the third anniversary of her vegan Prosecco brand Della Vite, which she founded in August 2020 with sisters Chloe and Cara

The eldest Delevingne sister Chloe, 38, wowed in a fireworks-style jumpsuit which boasted a low neckline and flared trousers as she attended the event alongside her husband Edward Grant, whom she married in 2014. 

Meanwhile Princess Maria-Olympia of Greece and Denmark - who dated Peregrine Pearson before he was spotted smooching newly-single Sophie Turner - wowed in a sleek black maxi dress. 

The gorgeous royal, who is King Charles's goddaughter, showed off her lithe torso in the figure-hugging black dress, while styling her hair into a chic bob.  

Model Cara didn't seem to be present at the event. 

Poppy's close friend Lady Mary Charteris stunned in a light yellow co-ord, showcasing her ripped physique and toned stomach.  

It comes after Poppy shared photos from her late summer break with her new squeeze Prince Constantine Alexios of Greece, 24, who is 13 years her junior. 

She has been enjoying a blossoming relationship with the Alexios - a member of the non-reigning royal Greek family - since the breakdown of her eight-year marriage to businessman James Cook.

The new couple seemingly took the next step in their relationship; enjoying a family holiday with his mother, 54-year-old Crown Princess Marie Chantal of Greece.

A royal occasion: Poppy was joined by Princess Maria-Olympia of Greece

A royal occasion: Poppy was joined by Princess Maria-Olympia of Greece

Having a good time: Poppy looked glamorous in the shiny number, which was held up by tiny straps and clung to her slim figure

Having a good time: Poppy looked glamorous in the shiny number, which was held up by tiny straps and clung to her slim figure

Glam dinner: Chloe Delevingne, Princess Maria-Olympia of Greece and Denmark, Mary Charteris and Poppy Delevingne

Glam dinner: Chloe Delevingne, Princess Maria-Olympia of Greece and Denmark, Mary Charteris and Poppy Delevingne

Sisters: Chloe and Poppy Delevingne both celebrated the three-year anniversary of their business

Sisters: Chloe and Poppy Delevingne both celebrated the three-year anniversary of their business

Loved-up: Chloe Delevingne was joined by her husband Edward Grant, whom she married in 2014

Loved-up: Chloe Delevingne was joined by her husband Edward Grant, whom she married in 2014

In February the model was spotted with Constantine during a stroll together in West London.

Despite the 12-year age gap between Poppy and Constantine — known to his pals as Tino — they are believed to have been enjoying each other's company for some time.

Constantine, who was once Europe's most eligible royal bachelor, is the eldest son and second child of Crown Prince Pavlos and Crown Princess Marie-Chantal of Greece.

He's also the grandson of Greece's late King Constantine II, who was a cousin of King Charles and one of Prince William's five godparents. 

He remains close to the royal family and is said to be William's godson.

Meanwhile, Tino, son of Crown Prince and Princess Pavlos, has often been considered one of Europe's most eligible royal bachelors.

Rumours started to circulate about the state of Poppy's marriage since James, 43, resigned as a director of her company, Poppy Delevingne Limited in January, the firm which files the accounts for her 'photographic activities'.

Poppy and James, who works for his family's aerospace company, tied the knot in 2014 at a Knightsbridge church ceremony, with sisters top model Cara and Chloe among her many bridesmaids.

Exes James and Poppy have not addressed their split publicly but are said to have called time on their union at the beginning of last year.

Main man: Edward Grant posed for a photo alongside celebrity chef Theo Randall at the event

Main man: Edward Grant posed for a photo alongside celebrity chef Theo Randall at the event

Sparkling: The eldest Delevingne sister Chloe, 38, wowed in a fireworks-style jumpsuit which boasted a low neckline

Sparkling: The eldest Delevingne sister Chloe, 38, wowed in a fireworks-style jumpsuit which boasted a low neckline

Royalty: The gorgeous royal Princess Olympia, who is King Charles's goddaughter, showed off her lithe torso in the figure-hugging black dress

Royalty: The gorgeous royal Princess Olympia, who is King Charles's goddaughter, showed off her lithe torso in the figure-hugging black dress

Incredible Occasion: Poppu put on a lavish spread for her guests

Incredible Occasion: Poppu put on a lavish spread for her guests 

Stunning: Poppy's close friend Lady Mary Charteris stunned in a light yellow co-ord, showcasing her ripped physique and toned stomach

Stunning: Poppy's close friend Lady Mary Charteris stunned in a light yellow co-ord, showcasing her ripped physique and toned stomach

Girl gang: Poppy was joined by India Langton and Princess Maria-Olympia as she hosted her event at the IHG hotel

Girl gang: Poppy was joined by India Langton and Princess Maria-Olympia as she hosted her event at the IHG hotel