Well, now you know the girls like to get a little playful when they perform the G-A-Y nightclub in London. A rite of passage that Miley Cyrus couldn't possibly let herself fall into the moderate or tame category, so she hiked her unitard deep up into her nether regions and set about to sing her doleful melodies whilst diddling herself silly on stage.
I suppose this all falls under the category of performance art, though in many counties where I grew up this would have fallen under the categories of being arrested under the Jim Morrison provisions. Still, it's swinging London, so Miley was swinging herself into the full-on stripper show category. Not that there's anything wrong with that. In fact, upon triple inspection, I'd say there's quite a few things going right. But I'll let you be the judge of that. Enjoy.