Britney Spears Toned Backside Finally Back

Britney’s impressive new look is the result of a stringent diet and sometimes an entire work day’s worth of rehearsing and dancing.

“Her outlet is dance,” the longtime friend told OK!. “She’s still dancing at least two hours a day and sometimes she’ll rehearse up to eight hours a day.”

View an entire gallery of Britney Spears’ new bikini body below. Click on each image to see its full size.