Work Bitch! Britney Spears showcased her flat abs while strutting her stuff in a floral crop top. The 38-year-old superstar flaunted her thin waist while sporting a brand new purchase, a colorful top so tiny it was practically a bra. The "I'm A Slave 4 U" singer danced around while showcasing her unbelievable curves giving her nearly 29 million followers a front-row seat at her private fashion show. Displaying her playful side, the blonde bombshell twirled around and flashed a smile while highlighting her tight tummy and ample cleavage on Tuesday.