Britney Spears kept it low key on her way into a studio with her mom in LA yesterday, but she's got one very big reason to smile. "Womanizer" made the biggest chart jump of all time from No. 96 to No. 1 this week, which also marks her first chart topping single since "...Baby One More Time"! That's pretty amazing for Britney and the fun is just beginning with a tour on the way and her album release set for December 2. Plus, rumor has it Miss Spears will be on the January cover of Glamour. Meanwhile, across town jury selection started in her driving without a license trial, though they had some trouble finding an unbiased group. Britney herself is never expected to appear in court, but she's always got her phone on hand to get the updates.