Katy Perry's nude ass was flashed in a bikini malfunction while having a good time with friends this weekend.
The pop star's bare butt was exposed after water weighed down her bikini bottom and nearly came all the way off. All Katy and her friends could do was laugh and all we can do is stare.
Her friend tried to cover her up with a board as she pulled up the bottoms but the damage was done.
We see a bit of the breast too but not nearly enough. Now when can we expect to see those glorious breasts, Katy?