In case you haven't noticed, Disney's child stars are all growing up. In the past year Selena Gomez, Demi Lovato, Miranda Cosgrove and Miley Cyrus have all turned 18, and are moving on to more mature projects.

That means Disney has some positions to fill. With an eye toward the future of tween programming, we take a look at what up-and-coming stars might fill those positions.