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Celebrities are lining up to get a piece of Britney Spears.
Sources tell me celebs will be flocking to the opening of the pop star's new Las Vegas show, Britney Spears: Piece of Me, on Dec. 27, at Planet Hollywood Resort & Casino.
Shortly after tickets went on sale in September, Spears' manager Larry Rudolph told me, "This is the best-selling show in the history of Vegas. We have a great thing going here. We have a great show we're putting together. We have nothing but greenlights ahead of us."