Every few years there is a changing of the guard. All the pretty ponies that were showered with undying love and attention either take a step up the pop ladder - or are sent kicking and screaming to the glue factory. It's a ruthless cycle that few survive. For every Britney Spears or Christina Aguilera, there are 10 Hilary Duffs wondering what the fuck happened. And, for a while there, that's the fate that seemed to await Demi Lovato - the destiny...
