Performing in a Times Square concert, Katy showed off the latest addition to her ever-growing collection of skintight dresses as she worked her signature kitsch-cool in a fluorescent palm-print backless mini.
Never one to skimp on the detail, Katy matched the tropical print with some candy-pink platforms and co-ordinating nails.
This latest look follows her choice of a space invaders-adorned mini for the finale of Germany's Next Top Model last thursday, while at the weekend she flied the flag for the World Cup in a stars and stripes emblazoned number.
We're not sure where Katy's been picking up her rubber dresses, but we can't wait to see what incarnation her next addition will take!
By Hayley Spencer