Friend abuse

I haven't talked to this friend in awhile, we recently just drifted apart, and she clearly doesn't want to hang out with me due to my hair style, and my clothes, she implied that in her journal on a social site for everyone including me to see.

She...

has sabatoged me, once, and now she has done it again, this time she is telling my best friend that I don't like him anymore and that I like this other boy, probably due to my status on my social site that said adam's coming home yay... -_-
Whats up with this??
I didn't do anything to her, and she's being uncalled for, and extremely umpleasant...and a liar.
What am I supposed to do?

IGNORE THIS PERSON, SHE WASNT A FRIEND TO BEGIN WITH, NOW YOUR D=BESTFRIEND WONT BELIEVE LIES IF HE IS YOUR BEST FRIEND