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Britney Spears is unveiling a new round of dates for her show at Las Vegas' Planet Hollywood. 

The new dates kick off on August 15th and will continue through the end of next February.  Fans can start buying tickets on Friday.  The dates include a full slate of concerts for the months of October, December and February and a lighter load for the months of September, November and January. 

"Piece of Me" has been running regularly since last December, around the time Britney's album, Britney Jean was released.  

It's also rumored that Planet Hollywood may be extending the show past the original two-year contract.  Caesar's Palace President Gary Selesner told the New York Daily News last week that the reaction to Britney in Vegas has been "fantastic" and that she's "filling out the place every night." 

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