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  The singer was giving her all on stage during her Las Vegas performance Saturday, but she suffered a huge wardrobe malfunction leaving her back exposed. What a circus! Britney Spears' dress nearly fell off her body in what may be the best wardrobe malfunction of the year.   While performing "Circus" at her Las Vegas show Saturday, Spears danced in a tight sequin dress, but apparently didn't have the time to zip it up in the back. As she twirled and cautiously dipped, Spears' dancers frantically tried to fix the malfunction before it became a total catastrophe.

  In footage taken by a fan (see it here), Britney can be seen giving it all she's got in a high energy performance in a sparkly outfit. But as she turns around, the back of her dress comes underdone.   However, despite nearly showing a lot to flesh, Britney stayed calm and took her wardrobe malfunction in her stride as she continued to dance as her backing dancers set to work, putting her dress back together again.

After being criticized for lip syncing through her Las Vegas residency debut, Britney Spears is now being accused of faking her abs. Photos from the opening shows of Spears' "Piece of Me" gig at Planet Hollywood Resort & Casino surfaced last weekend, showing the 32-year-old in an array of sexy and skimpy outfits. From a nude bodysuit to a bondage-inspired leotard, the pop star wasn't afraid to don the daring. But after shots from the performances hit the Internet, some questioned if Spears' abs were the real thing. The singer posted a photo to Instagram Dec. 28, and critics were quick to leave snarky comments about how her abs appeared to be painted on.