Star Tracks 

Aguilera tunes up for the annual tree lighting ceremony in N.Y.C. Plus: Paris & Nicole reunite, Bruce Willis on set and more

PUMP IT UP  photo | Britney Spears

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PUMP IT UP

Meanwhile, Federline's estranged wife Britney Spears causes a mini traffic jam Tuesday night at a Santa Monica gas station, where she and a girlfriend refueled before continuing their evening at the Loews Hotel.

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Credit: Finalpixx

Published: Wednesday Nov 29, 2006 | 05:00 PM EST

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