Poppy Delevingne glows in a rose gold sequin evening dress alongside sister Chloe and Princess Olympia of Greece as she celebrates the anniversary of her brand Prosecco

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

The model, 37, hosted a glamorous bash at IHG’s InterContinental Hotel on London’s chic Park Lane, along with a host of celebrity guests.

Poppy looked glamorous in the shimmery one, which was held up by tiny straps and clung to her slim figure, while the nude color flattered her flawless skin.

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

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

Eldest Delevingne sister Chloe, 38, wowed in a fireworks-style jumpsuit with a plunging neckline and flared trousers as she attended the event with her husband Edward Grant, who she married in 2014.

Meanwhile, Princess Maria-Olympia of Greece and Denmark – who dated Peregrine Pearson before he was spotted cuddling newly single Sophie Turner – was in a tight black maxi dress.

The beautiful royal, who is the goddaughter of King Charles, showed off her lithe torso in the figure-hugging black dress as she styled her hair in a chic bob.

Model Cara did not appear to be present at the event.

Poppy’s close friend Lady Mary Charteris stunned in a pale yellow ensemble, which showed off her ripped physique and toned stomach.

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

She has enjoyed a blossoming relationship with the Alexios – a member of the non-reigning Greek royal 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 vacation with his mother, 54-year-old Crown Princess Marie Chantal of Greece.

In February, the model was spotted with Constantine during a joint walk in West London.

Despite the 12-year age gap between Poppy and Constantine – known to his friends as Tino – it is believed they have been enjoying each other’s company for some time.

Constantine, 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 is also the grandson of the late Greek King Constantine II, 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, is often considered one of Europe’s most eligible royal bachelors.

Rumors began to circulate about the state of affairs surrounding Poppy’s marriage since James, 43, resigned in January as director of her company, Poppy Delevingne Limited, the company that files the accounts for her ‘photographic activities’.

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

Exes James and Poppy have not publicly discussed their split, but are said to have called time on their union early last year.