They confirmed their surprise coupling by taking a romantic hand-in-hand stroll through picturesque Italian streets on Friday.
But it seems Mariah Carey and casino billionaire James Packer's relationship is already going from strength-to-strength.
The couple were pictured on board a speedboat on Saturday as they relaxed together in the sun off the coast of Capri.The 45-year-old singer showed off her natural beauty and left her dark hair tousled and wet around her shoulders as she gazed adoringly at the Australian entrepreneur.
Wearing a black and orange jumper and with her eyes covered with dark sunglasses, the American was spotted chatting to 47-year-old Packer, who donned a dark fitted T-shirt and aviators.
The mother of four-year-old twins cuddled one of her children while Packer's daughter was spotted enjoying a ride on a banana boat.
On Friday, the couple confirmed their romance and were spotted ambling along the area's beautiful cobbled roads, amid reports they are on an 'extended holiday'.
They visited upmarket restaurant Aurora, where witnesses said they seemed at ease in each other's company.
'They were like a normal couple, they had a relaxed dinner,' a source said, adding that they appeared 'affectionate'.