They've been inseparable since they began dating in June and Mariah Carey and her billionaire beau James Packer were pictured taking a romantic stroll while on holiday in Capri on Thursday.

Mariah, 45, pulled out all the stops for the occasion, putting on a busty display in a low-cut maxi dress which had a floral design running throughout.

Of course, she had to navigate the cobbled streets in a pair of her trademark platform heels, but that didn't stop the singing sensation from wearing a smile on her face.

Scroll down for video

Happy together: They've been inseparable since they began dating in June and Mariah Carey and her billionaire beau James Packer were pictured taking a romantic stroll while on holiday in Capri on Thursday

Mariah, 45, pulled out all the stops for the occasion, putting on a busty display in a low-cut maxi dress which had a floral design running throughout as she cosied up to her man

As her 47-year-old man stayed close to her, wearing a simple pair of jeans and a zip-up top over a T-shirt, it appears as if their new romance is going from strength to strength

James was seen protectively putting his arm around the mother-of-two and later linking arms with her as they meandered through the streets of Italy together on their date night.

Not shy about putting their relationship out there, James recently sang Mariah's praises, telling News Corps Australia: 'Mariah is just incredible, amazing she really is...She’s a genius'.

Gushing about his love interest, the businessman went on: 'Who else is there? There is Barbra Streisand, Whitney Houston and Mariah Carey. Not Madonna...Those three can sing five octaves...'

Close: James was seen protectively putting his arm around the mother-of-two and later linking arms with her as they meandered through the streets of Italy together on their date night

Not shy about putting their relationship out there, James recently sang Mariah's praises, telling News Corps Australia : 'Mariah is just incredible, amazing she really is...She’s a genius'

Vacay moments: On Friday, the singer shared some of her favourite pictures from her yacht holiday, but it was her children Monroe and Moroccan who made the cut not her beau

James and Mariah had a very public unveiling as a couple when they enjoyed a Mediterranean several months ago.

They spent time together sailing around the Balearic Islands, including Ibiza and Formentera, on James super yacht Artic P.

On Friday, the singer shared some of her favourite moments during that time, but it was her children Monroe and Moroccan who made the cut not her beau.

Going well: As her 47-year-old man stayed close to her, wearing a simple pair of jeans and a zip-up top over a T-shirt, it appears as if their new romance is going from strength to strength

Not true: Earlier in the week, Mariah was forced to deny that she is pregnant with James' baby following a report in an Australian magazine

Earlier in the week, Mariah was forced to deny that she is pregnant with James' baby following a report in an Australian magazine.

'It’s false reporting, nothing more,' her rep told Just Jared.

On Monday, New Idea magazine claimed that the billionaire casino mogul and the pop diva were expecting their first child together.

Meanwhile, James' ex-wife Erica, 38, the mother of his three children, went public with her new romance with singer Seal, 52, in July.

The couple have been pictured packing on the PDA this summer as they holidayed in Italy aboard Arctic P, the sprawling super-yacht owned by James.

Mariah is mother to four-year-old twins Moroccan and Monroe from her marriage to television presenter Nick Cannon.