KIM KARDASHIAN'S buttocks already defy about 17 separate natural laws, spanning numerous scientific disciplines . . . from gravity to physics to biology to HOLY CRAP, HOW DOES SHE KEEP FROM FALLING OVER?  (???)

--But her backside may have gotten even BIGGER.  (--Check out this pic . . .)

(--It's time to settle this once and for all . . . Kim Kardashian's backside:  Is it real or is it silicone???)