BEIJING, Nov. 10 -- Britney Spears has done it again, hitting the headlines during her first Australian tour over a row about lip-synching and a lacklustre performance that her tour promoter said had left her “extremely upset.”

    Australian media reported that fans walked out of the first of Spears' 14 Australian performances that was staged in Perth on Friday after just a few songs, describing it as "boring," "stiff," mimed and lacking interaction with the audience.

    But the promoter of Spears' Australian “Circus” tour, her manager and some fans rushed to her defense, saying this savaging has left the U.S. pop singer traumatized.

Singer Britney Spears arrives at the Teen Choice 2009 Awards taping in Los Angeles, California August 9, 2009.

    "Britney is aware of all this and she's extremely upset by it," Paul Dainty, Spears' tour promoter, told The Australian newspaper Monday.

    Spears' manager Adam Leber took to Spears' Twitter account to defend the singer to her 3.7-million followers. "It's unfortunate that one journalist in Perth didn't enjoy the show last night. Fortunately the other 18,272 fans in attendance did," he wrote.