BRITNEY SPEARS: Next Chapter

Britney Spears is still riding high over the success of her memoir, The Woman in Me, which sold more than 1.1 million copies during its first week.

- Jaime Harkin, Molly McGuigan, Leanne Aciz Stanton, Travis Cronin & Andrea Simpson

"Britney has a whole new lease on life," says a source, adding that the 41-year-old star is writing new music and even teasing a second book. "Writing [her memoir] was so cathartic," adds the source. "It helped Britney cross over