Demi Lovato and Britney Spears caused a lot of buzz when they joined the X Factor as the new judges, and it seems like the girls are doing a great job as judges.

Check out these two new previews to get a look at them in action. The first one shows the two singers talking about their experiences so far, as well as some clips of their judging.

The second has lots of clips of Demi disagreeing with the notoriously harsh Simon Cowell. Watch as she dishes out some of her own criticism to Simon.

Will you be watching the X Factor in September?

Sources: Beautiful Ballad, Anything Disney