Hayden Panettiere Rocks Jingle Ball

Style icon Hayden Panettiere keeps it cute in a ruffled shirt and black pencil skirt at Z100′s Jingle Ball 2007 on Friday at NYC’s Madison Square Garden.

The 18-year-old Heroes hottie introduced the gorgeous R&B singer Alicia Keys to the stage. This past Thursday, Alicia began her fourth week at No. 1 on Billboard’s Hot 100 singles chart.

10+ pictures of Hayden Panettiere rockin’ Z100′s Jingle Ball