Demi Lovato vs Mariah Carey
This feud didn’t start on set — it went down on social media.
After Mariah dismissed comparisons between her and Ariana Grande,
Demi fired back saying Mariah was “rude for no reason.”
Mariah’s fans attacked Demi online.
Demi refused to back down.
These two divas?
They will NEVER share a stage.