EXCLUSIVESean Stewart, 43, is 'happier than ever' as he parties with sister Kimberly on dad Rod's yacht in Italy... amid 'divorce' from Jody Weintraub and new relationship with Julia Stambler

Sean Stewart is having some fun with him family amid his looming divorcing from his wife of one year, TV producer Jody Weintraub.

She is the daughter of the late Ocean's Eleven producer Jerry Weintraub.

The reality TV star was seen with dad Rod Stewart on a yacht in Porto Cervo in Sardinia.

'He is happier than ever these days, he feels very carefree,' a source told DailyMail.com. 'The stress is off him and he can chill.' 

Sean, 43, posted images to his Insta stories where he was lounging on deck then re-enacting the Leonardo DiCaprio 'king of the world' scene from Titanic.

Not with him was his new girlfriend Julia Stambler.

Sean's sister Kimberly Stewart shared a family group photo on the yacht where she stood next to her brother Sean - their mother is model Alana Stewart.

Sean Stewart is having some fun with him family amid his looming divorcing from his wife of one year, TV producer Jody Weintraub. The reality TV star was seen with dad Rod Stewart on a yacht in Porto Cervo in Sardinia. Sean, 43, posted images to his Insta stories where he was lounging on deck. Not with him was his new girlfriend Julia Stambler

Sean Stewart is having some fun with him family amid his looming divorcing from his wife of one year, TV producer Jody Weintraub. The reality TV star was seen with dad Rod Stewart on a yacht in Porto Cervo in Sardinia. Sean, 43, posted images to his Insta stories where he was lounging on deck. Not with him was his new girlfriend Julia Stambler

Sean's sister Kimberly Stewart shared a family group photo on the yacht where she stood next to her brother Sean - their mother is model Alana Stewart

Sean's sister Kimberly Stewart shared a family group photo on the yacht where she stood next to her brother Sean - their mother is model Alana Stewart

Rod, 79, hosted six of his eight children, as well as his baby grandson Otis and several of his kids' partners.

He was also with his wife Penny, 53.

The couple - who married in 2007 - were joined by their two sons Alastair Wallace, 18, and Aiden Patrick, 13, as well as Alastair's girlfriend Eloise Darlington, 18.

This comes weeks after a source told DailyMail.com that Sean and Jody have been separated already for 'several months' and are now working on the divorce.

'They were doing so well for so long but then things went haywire earlier this year,' the source tells DailyMail.com.

'They realized they were not a fit for each other after they started to fight a lot over everyday things.'

And Sean has already moved on with Julia Stambler.

They have really hit it off. She has her own business and is very independent,' added the source. 'They have been going on dates in Malibu.'

Sean had on a black and white shirt with white slacks as he stood with Kimberly

Sean had on a black and white shirt with white slacks as he stood with Kimberly

Sean is divorcing his wife of one year, TV producer Jody Weintraub, who is the daughter of the late Ocean's Eleven producer Jerry Weintraub. Seen with Jody and his father Rod

Sean is divorcing his wife of one year, TV producer Jody Weintraub, who is the daughter of the late Ocean's Eleven producer Jerry Weintraub. Seen with Jody and his father Rod

In February 2023, Sean - whose best friend is Kourtney Kardashian's ex Scott Disick - shocked his family by announcing he had married Weintraub in Sin City.

The elopement was thought to be 'spur of the moment.' 

They wed on Valentine's Day, with Sean proposing during a romantic meal at Catch and the couple making things official just hours later. 

The pair, who have known each other since high school, are said to have tied the knot at Little Church of the West while clad in their normal clothing. 

They met through a mutual pal, producer Courtenay Semel. Jody has a son from her first marriage. 

Earlier this year, Jody and Sean bought a house together in Los Angeles. 

The two will likely sell the house, the source added. 

Alana was Rod's first wife, and they married in 1979, but they divorced five years later. As well as Sean, the couple share daughter Kimberly, 43.

Alana was also married to actor George Hamilton.

This comes after Sean has lost a stunning 40lbs over the last six months thanks to working out daily.

The former reality TV star shared with DailyMail.com that he wakes up as early as 4 am to start lifting weights.

'They were doing so well for so long but then things went haywire earlier this year,' the source tells DailyMail.com. 'They realized they were not a fit for each other'

'They were doing so well for so long but then things went haywire earlier this year,' the source tells DailyMail.com. 'They realized they were not a fit for each other' 

The couple tied the knot in Las Vegas on Valentine's Day, with Sean proposing during a romantic meal at Catch (pictured with Rod last year)

The couple tied the knot in Las Vegas on Valentine's Day, with Sean proposing during a romantic meal at Catch (pictured with Rod last year) 

Alana and Rod - who married in 1979 and divorced five years later pictured in 2019 with Rod's new wife Penny Lancaster, left

Alana and Rod - who married in 1979 and divorced five years later pictured in 2019 with Rod's new wife Penny Lancaster, left

'I get up super early to get it done and then go for a long walk,' the Sons Of Hollywood star revealed. 'Of course, later in the day I do take a nap, so I am not sleep deprived.

'There is nothing better than getting a workout done very early in the day so you just get it over with and off your mind.'

Stewart also said that he was tired of feeling bigger and wanted to slim down for the summer.

Stewart has lost a stunning 40lbs over the last six months thanks to working out daily

Stewart has lost a stunning 40lbs over the last six months thanks to working out daily 

'It's not comfortable having weight on you, it feels awful, and slows you down. So I decided to finally do something about it.'

He also changed his diet a bit.

Instead of sliders or calamari, he opts for shrimp cocktails: 'I have cut back on carbs a bit, but I don't go crazy.

'I mean, I can't live without my rice in sushi! Right? I love sushi and will not give that up.' 

He also wanted to lose weight for his new TV show which he is shooting the first episode, called the 'pilot' for. 

The show will also highlight his career as a designer of his brand Dirty Weekend.

'There is also a focus on his business, which has taken off, he is the designer of Dirty Weekend which makes pajamas and other things. It has a big celebrity following.'

The new show will be part reality, party comedy, and has been pegged a 'comedy ensemble show' DailyMail.com has learned.

Sean is the fashion designer behind the casual brand Dirty Weekend which Disick from The Kardashians is a fan of.  They make hoodies and swim trunks and are soon coming out with bikinis.  His partner on Dirty Weekend is Hector Marquez.