Snooki's Downfall -- Being Pregnant in High Heels

Snooki is no stranger to losing her balance and falling on the floor, but this time alcohol wasn't what caused her to almost bite it ... it was her huge platform wedge heels.

While arriving with all her crap to the infamous Seaside Heights crib -- where she won't be living this season -- the pregnant "Jersey Shore" star lost her footing, but luckily recovered avoiding any sort of injury to herself or her unborn baby.

This may be Snook's first fashion misstep that didn't involve a low cut top, leopard print spandex mini-dress, or Ed Hardy.