Britney Spears Flaunts Toned Abs and Has a Message for Haters: 'Mean People Suck'

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If there's two things Britney Spears loves to do, it's slam her haters and show off her toned figure -- and she managed to do both with a super confident selfie she posted to Twitter on Thursday.

The "Piece of Me" singer snapped this sexy makeup-free shot of herself pointing to her "Mean People Suck" crop top while standing next to a home exercise machine. Spears captioned the pic, "Enough said."

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It's clear that Spears, who is the mother of two sons -- 10-year-old Sean Preston and 8-year-old Jayden James -- didn't over-indulge while celebrating her 34th birthday last Wednesday, because she is looking healthier and happier than ever!

The singer and Las Vegas headliner has been flaunting her fit physique in recent months and showing off the results of her intense exercise regimen and exhausting on-stage performances.

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On Monday, Spears flashed her flat midsection in a mirror-shot selfie after a "long day of recording," and it's clear just how proud she is of her enviable physique. Check out the video below for a look at her toned tummy.

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