Poor Katy Perry. Out signing autographs, bothering no one and looking perfectly sweet in her little polka dot skirt/dress, when suddenly..POP! Two giant yellow smiley faces appear out of nowhere and attach themselves to her shoulders.

"It was horrific," an eye witness told The Fashion Police. "Katy had no chance: she just didn't see it coming. It was tragic to see such a pretty young woman attacked in such a senseless way."

Katy is currently recovering from her ordeal at a Fashion Police Safe House. Meanwhile, we're putting out ab APB on the yellow smiley faces, which we believe to be armed and dangerous: do not approach them, people – just call The Fashion Police!