WHOA! Katy Perry Flaunts Cleavage In Low Cut Dress!

Katy Perry is in Paris for Fashion Week right now -- but all eyes are on her clothes, not what's on the runway!

Last night, the single singer stepped out for an event with Karl Lagerfeld at La Maison du Caviar, where she stole the spotlight in a super-short dress with a crazy pattern and plunging neckline.

Earlier in the week Katy put even more of her body on display when she stepped out in a sheer dress -- one that showed her underwear as she walked through the City of Lights!