Demi Lovato

From Katy Perry to Justin Bieber, here are some of the biggest names who have had beef with pop star Taylor Swift.

The pop star had the BEST response.

Demi appeared to make clear which side she's on.

Our hearts are still breaking for these former couples.

The pop star told fans what they can expect from her new album.

The pop star is NOT a fan.

And we love them for it!

'I needed to make those mistakes.'

The pop star is in a good place following her break up.

Demi Lovato is still 'committed to her sobriety.'

Check out 15 celebrities who made a dramatic exit from social media.

Demi Lovato paid tribute to someone who was very special to her.