Miley Cyrus: link

Selena Gomez: link (please ignore the beginning when she's voice acting)

Demi Lovato: link

I think all of them are great actresses. It was hard to decide between Miley and Demi because both are really fantastic, they can show a lot of emotion, they can show suffering, anger, comedy, and happiness. It was hard for me to decide but Miley can actually cry with real tears, which is a very difficult thing to do. Actors strive to be able to cry for real because it's the most ultimate and difficult part of acting, if an actor or actress can cry you definitely can't say that they can't act. Selena is great but she has a little bit of a lack of facial expression, no to the point where she's like Kristen Stewart, but she needs to work on that a little bit. Nevertheless though she's a great actress and that's definitely her strong suit, unlike singing.

Can't agree more with KataraLover. It was hard to decide Demi or Miley, but I say Demi

1. Selena
2. Miley
3. Demi
They're all fantastic, though.

Selena is a bland actress

~

and miley

sorry biased~