Why are Ariana Grande and Jennette Mccurdy fighting?

Jennette McCurdy and Ariana Grande seem to be fighting right now, but it's not the first time that one of Ariana's castmates is mad at her.

Do you remember when Ariana basically accused Victoria Justice of being the one responsible for the end of Victorious? She hinted that the show was canceled because Victoria wanted to do a solo tour.

But now the shoe is on the other foot with Sam & Cat.

One of the theories about why Jennette McCurdy is mad at Ariana is that Ariana wants to ditch the show to focus on her music career.

It's strange that Jennette and Ariana are mad at each other in the exactly same week that Ariana and Victoria made up at the Kids' Choice Awards.

We'll have to wait and see what happens with Sam & Cat.