Enjoying a leisurely Columbus Day holiday, Britney Spears dropped by Starbucks in Calabasas, CA on Monday (October 11). Sporting an unkempt hairdo, the "Gimme More" singer flashed a big smile as she cheerfully picked up a caffeine beverage alongside her trusty security staffer. Currently in the midst of putting together a new album, recent reports from E! tell that Miss Spears' team recently gathered an ensemble of top music minds in Dallas to put together material for the pop star. Talking about the disc, OneRepublic frontman Ryan Tedder said, "It's mind-bendy and trippy. I applaud the label...