Katy Perry is obsessed with boobs…hers and everyone else’s!

Katy Perry is a hands-on kind of girl – especially when it comes to boobs. Her recent tour mate Charli XCX, 22, revealed that Katy once gave her a massage that got a little out of control. Hmm…

Charli isn’t the first lady to be touched up by Katy. We noticed the grabby pop star has a habit of groping all of her celeb pals.

And let’s not forget, she’s also really into showering her own 32D assets with attention.

Click through for some of Katy’s best boob moments.