PROVIDENCE Holy Hannah Montana pandemonium. White stretch limos disgorged petite screeching girls and post-ticket-purchase financially stretched parents. Slick ticket scalpers whispered, Got four hundred? Security guards shouted into their two-ways as the air sparked with the sort of expectation generally reserved for presidential motorcades.

When the doors opened at the Dunkin Donuts Center for the 7 o clock show yesterday, hordes of children raced toward their coveted seats in a sold-out house estimated at 10,000. Doting parents raced to keep up. All this adoration in the name of an adorable Disney Channel pop star with two personas, Hannah Montana and Miley Cyrus, and accordingly, changeable hair.

We love her so much that we screech, and my mom had to get earplugs, said Jenna Sweeney, a 9-year-old Hannah fan from Massachusetts who came with three friends, each accompanied by a mother with a cell phone. If you are one of the rare individuals who have been living under a rock and are clueless about Hannah Montana ( Is she a doll? you might ask, Or a real person? ) then Jenna can help you out: She s the same person with a whole other identity, Jenna explains pertly.

She puts on a blonde wig and she s Hannah, but if she s in brunette mode, then she s Miley. And then, she explains that Miley s trying to fit in at school with the popular kids, but poor Miley is kind of at the bottom, she says. But Hannah pop star by night is apparently one bright shining blonde star. OK, got it.