It's happened to us all at one time or another. A water-slides rush of water or a huge wave in the wave pool and OOPS! Not bottoms or a top for my ladies. Embarrassing yes but so worth it on a hot day. it was definitely hot this weekend as Katy Perry looked for a cooling spot in Calif. and ended up giving the crowd a lil peek at the goods.

The crowd who gathered to watch Katy Perry ride the slides at Raging Waters in San Dimas was rewarded for their staring and gawking at a celeb at play when the water took hold of Katy's bikini bottoms down down down!  One of the lifeguards quickly rushed to her aid and tried to block her but it was too late, and everyone had already seen that big juicy booty!