No one really knows WHY Demi Lovato and Miley Cyrus appear to have hostility towards each other, but after Miss Cyrus unfollowed Demi on Twitter, Demi (sub)tweeted this:

 

 

Hmm wonder what that's all about! Play nice ladies!

PHOTOS: DEMI + MILEY THROUGH THE YEARS

PHOTOS: DEMI LOVATO AT THE IZOD CENTER

 

PHOTOS: MILEY CYRUS AT Z100 JINGLE BALL

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