She’s currently Down Under with her Prismatic World Tour.

And pop princess Katy Perry has been making the most of her rare free time after two back-to-back nights performing at Sydney’s Allphones Arena, joining her concert crew on board a luxury yacht in the Australian city’s harbour on Sunday.

The singer was sunning herself in a pale pink string bikini, which made the most of her incredible figure and washboard abs.

The superstar wore her black locks tied back in a low bun and accessorised with a pair of silver hoop earrings.

Katy treated herself to an ice cream as she looked out to sea while chatting and joking around with her gang of backing dancers. The star was also spotted enjoying a cocktail as she lounged around on board the boat.

Her fun-filled outing didn’t end there since Katy later achieved one of her lifelong dreams of climbing Sydney’s iconic Harbour Bridge.

Suiting up in full climbing gear, the Roar singer and her team got ready to ascend the landmark at twilight.

She wrote on Twitter: ‘I DID IT. Finally, after all these years talkin’ ’bout it I climbed your bridge tonight Sydney!’

Katy is set to remain in Australia right up until Christmas, telling the 60,000-strong crowd of loyal ‘Katy cats’ at a recent concert that she’s become an ‘honorary Aussie’.

Her first show in Australia was in Perth on the 7th of November and her last will be in Brisbane on the 15th of December.

She has well and truly embraced Aussie culture, taking a particular liking to famous Australian comedy show, Kath & Kim.