Britney Shows Off Washboard Abs In Gym Snap

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She's been working hard on her fitness over the summer and the results are proving very impressive.
And Britney Spears displayed the fruits of her labor as she showed off her cleavage and washboard abs in a super sexy Instagram snap posted from the gym.

The pop star, 35, could have passed for a woman half her age as she slipped into a tiny white halter-neck bikini.