Selena - Monte Carlo Mall Tour Miami International Mall - June 21, 2011

As young as teen Texans Demi Lovato and Selena Gomez are -- they're both 16, by the way -- their fans almost always are going to be younger.

That's a pop-culture rule that has been proven through the decades, with actors and singers and icons of all shapes and sizes. But Lovato and Gomez, who were in Canada yesterday promoting their new made-for-TV movie Princess Protection Program, have some interesting takes on why that is.

"It's easier to look up to somebody when they're older than you," said Lovato, summing it up with impressive ease.

"Whereas if they're older, sometimes they have issues,...