Christina Aguilera rocks America West Arena with

On a night defined by crisp choreography, bare midriffs and the deafening screams of young girls, pop singer Christina Aguilera put on a show Sunday night that proved why she is one of the most popular acts in the entertainment industry.

Judging from the thousands of pre-teens dressed in the latest "Christina" style, the crowd that packed Phoenix's America West Arena was hungry for a night to remember - and it was not disappointed.

When she spoke to the audience, Aguilera's voice sounded hoarse, indicative of the 19-year-old's busy touring schedule. When she sang, however, she took the crowd on a voyage through the vocal spectrum, keeping the audience on its feet for her hour-long set.

From the opening song, the 1999 break-out hit "Genie in a Bottle," Aguilera and her dancers pummeled the crowd with a visual spectacle. Suddenly appearing on stage in a rushed cloud of smoke, the diminutive diva strutted around the stage, pointing out to an audience that begged for more.