Dressed in a provocative basque, big eyelashes and bright red lips, the 26-year-old tweeted: "Hey Melbourne we're here! We can hear you downstairs! Is that church bell ringing for us? The devil of pop is here."
Gaga is the midst of her 'Born This Way Ball' tour in Australia, and this is just the latest of a series of pictures she's been posting.
Click on to check out some of the others, too