If you write a song about whipping your hair back and forth, you REALLY shouldn't pull a stunt like this.

 

 

WILLOW SMITH has shaved her head.  She's 11, which seems pretty young to pull THAT kind of a hair stunt.

 

 

Fortunately for her, she doesn't look ridiculous.  And her mom, JADA PINKETT SMITH, pulled off the very-short hair look better than most . . . so she JUST might get away with this unscathed.