Britney Spears' See-Through Smoothie Stop

After a serious sweat session earlier this morning, it was time for Britney Spears to refuel with a smoothie at Coffee Bean in Thousand Oaks, California

The "Scream & Shout" singer wore black pants, matching heels, and a cream colored blouse that revealed her hot pink brassiere underneath.

All that concentration on staying in shape is likely to pay off, as she's finalizing plans for her lucrative Vegas residency deal.

According to reports, Brit will perform alternating weekends at Planet Hollywood in Sin City for two years, with rehearsals and casting beginning in late September.