Katy Perry on All Fours for Handprint Ceremony at Chinese Theater in Hollywood, Her Boosting Bazongas Nearly Popping Out and Slapping Down on the Sidewalk (VIDEO)

My god that woman's rack is practically slapping down across the wet cement!

And she's down on her knees, leaning forward and showing her breast assets to the world!

Watch, "Katy Perry Handprint Ceremony at TCL Chinese Theater in Hollywood (VIDEO)."

Plus, lots of photos of her deep-cleavage bazongas spilling out!