Princess Eugenie’s husband has been spotted frolicking with three glamorous women on board a tour boat during a holiday in Italy.

Jack Brooksbank was snapped larking around with pals Rachel Zalis, Maria Buccellati, and Erica Pelosini during a weekend break in the Med.

The 35-year-old European brand director of Casamigos Tequila had his arm around model-turned-fashion ambassador Ms Buccellati, who wore a skimpy orange swimsuit.

They posed for a chummy Instagram photo with him in shorts and a t-shirt to share with her 14,000 followers aboard the 26ft gozo boat.

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Jack and Maria Buccellati pose for an Instagram snap (

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Instagram)
Jack was seen with his arm around Maria Buccellati (

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Cobra Team / BACKGRID)

And then he stripped down to his trunks and dived into the Tyrrhenian Sea off the Italian island of Capri, holding onto a foam swimming noodle with topless model Erica.

The pair were later seen back on deck and Jack had wrapped a towel around his waist.

Third companion, Rachel, is an ex-magazine editor and Casamigos’s global director.

Jack frolics in the sea with model Erica Pelosini (

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Cobra Team / BACKGRID)

Jack chatted to the boat's captain and was also seen reading a book and sipping on a glass of rosé wine during the excursion on Friday afternoon.

He attended an invitation-only Unicef Summer Gala charity ball under the stars on Saturday as part of the trip, with the bash sponsored by George Clooney-owned Casamigos.

Tickets were priced from £8,000 to £25,000.

Jack was in Capri to work at a ball (

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Cobra Team / BACKGRID)

The boat trip saw him exploring the caves and grottos dotted around Capri's coast.

He could be seen occasionally checking his phone, in between taking dips to cool off.

A source close to Jack told The Mail on Sunday that Eugenie hadn't joined him on the trip to Capri because he was "there to work at the ball".

Jack and Erica dry off back on board (

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Cobra Team / BACKGRID)

It is understood Jack's job was to keep an eye on the cocktail bar and mingle with the famous guests, who included Katy Perry, John Legend and Heidi Klum.

Eugenie, meanwhile, was looking after their five-month-old son, August, back home in Windsor.

The 31-year-old daughter of Prince Andrew and Sarah Ferguson was reportedly with friends in Ibiza last week.

Rachel Zalis, Maria Buccellati, and Erica Pelosini during the trip (

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Cobra Team / BACKGRID)

Jack and Eugenie, who is 11th-in-line to the throne, met in 2010 on a skiing holiday in Switzerland.

After years of dating Jack proposed with a £100,000 pink padparadscha sapphire engagement ring that looked just like Eugenie's mother's in Nicaragua.

The couple got married in a huge wedding at Windsor in October 2018 with celebrities, friends and family at the ceremony in St George's Chapel and welcomed their first child in February.

The group spent Friday afternoon on the boat trip before the swanky gala (

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Cobra Team / BACKGRID)

The couple's wedding took place in the same venue as Meghan Markle and Prince Harry 's just a few months after them.

However the second royal wedding of the year was a bigger affair, with several days of partying for their nearest and dearest.

As well as the Queen's reception on the Friday afternoon, immediately after the ceremony, Prince Andrew and Sarah Ferguson hosted a glitzy bash at their home, Windsor Lodge.

Jack often went back on deck to check his phone (

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Cobra Team / BACKGRID)

After Prince Harry and Meghan Markle stepped down as royals and moved to the US, Eugenie and Jack moved into their old home, Frogmore Cottage.

It sits within the grounds of Windsor Castle and was subject to a £2.4million refurbishment, courtesy of the taxpayer - though later repaid - before Harry and Meghan moved in.

The Queen had gifted the property to the Duke and Duchess of Sussex - as well as their new titles - as a wedding present prior to them tying the knot in May 2018.

Since moving into Frogmore Cottage with her husband, Princess Eugenie has shared multiple unprecedented snaps inside the property, which sits within the grounds of Windsor Castle.

The photos of Stowe-educated Jack come just weeks after Princess Eugenie celebrated Father's Day by sharing photos of her husband with their four-month-old baby son August.

One showed a dozing Jack with his little son resting on his chest, while another showed the proud dad beaming at the camera while holding the tot.

Jack and Princess Eugenie welcomed son August this year (

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Princess Eugenie/Instagram)

The ex-nightclub manager, once nicknamed 'barman Jack', was also shown smiling as he pushed August's pram and posing with his wife and child in the countryside.

In the caption Eugenie wrote: "Happy Father's Day to you my love... you are the ultimate father to our boy!!"

August Philip Hawke Brooksbank was born on February 9 at the Portland Hospital in London.

Eugenie announced she was pregnant in a sweet Instagram post of a pair of baby boots, with the caption: "Jack and I are so excited for 2021…"