Singer Britney Spears took to Instagram on Wednesday to show off her amazingly toned physique.

She writes, "Amazing amazing shoot with @jefflipsky today! Been working hard this summer! So ready to bring it for the next round of #PieceOfMe shows next week.”

The pop star began her two-year residency show, "Britney: Piece of Me," in Las Vegas at Planet Hollywood Resort & Casino in December 2013, and recently added new show dates.
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