Katy Perry

Over the weekend a bunch of excited Aussie teenagers got a surprise visit from pop songstress Katy Perry. Apparently the singer wasn’t too busy kissing girls or gushing wildly about her boyfriend Russell Brand to make a pit stop at the Melbourne High School prom, where she drunkenly ran through her hit “California Gurls.”

But Perry isn’t the only celeb who’s crashed a prom or two. After the jump, more celebs who have made someone else’s prom the night of their lives.