Britney Spears Says She Loves 'Sex,' Rehearses for Vegas in E! Doc Preview (Video)

The two-hour special airs Dec. 22, five days before the singer kicks off her "Britney: Piece of Me" show. Britney Spears is opening up in E! documentary I Am Britney Jean. The two-hour special airs Dec. 22 at 9 p.m., five days before the 32-year-old pop singer unveils her two-year residency, Britney: Piece of Me, at Las Vegas' Planet Hollywood. I Am Britney Jean will offer "an intimate look at one of the most overexposed yet under-revealed stars of today as she faces one of her biggest challenge...