Katy Perry gets groped by a fan on stage!

She's sung about kissing girls and liking it in the past - but we're not sure how much Katy Perry enjoyed being fondled by an overzealous fan during her Rock In Rio gigs in Brazil on Monday.

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After the 30-year-old singer invited a young girl called Rayane to join her on stage, things got 'friendly' very quickly!

"She's kissing my neck," Katy can be heard telling the crowd in a video that was posted to YouTube. "You are high..... She's rolling!"

Katy Perry. Photo: YoutTube

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The girl, who appeared to be completely out of it, then proceeded to grope the star's boobs and pat her bum before leaving the stage.

Katy - who is reportedly back with her ex John Mayer - made a huge joke of their encounter and handled the awkward situation like a pro!

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