Kobe Bryant -- WIFE FALLS HARD ... Louboutin Down!!!! (VIDEO)

Vanessa Bryant sure made one hell of an entrance at the Duke vs. Oregon game in Anaheim Thursday night ... FALLING HARD ... and almost taking out Kobe in the process!!

The Bryants were walking from the tunnel to their seats when Vanessa lost her footing and went tumbling forward ... nearly pulling down Kobe ... and leaving a fancy Louboutin heel in her wake.

Miraculously, Kobe wasn't hurt during the incident ... and Vanessa picked herself right up.

The Louboutin also emerged unscathed.