FILE - In this July 25, 2009 file photo,  Anastacia performs during her concert  in Lisbon, Portugal.  Managers for Anastacia say she has canceled a planned performance in Dubai and an upcoming European tour after being diagnosed with breast cancer.  A statement Thursday, Feb. 28, 2013,  says the 44-year-old performer will cancel all appearances and travel until further notice. Anastascia, who has had multi-platinum album sales in Europe, Australia and elsewhere, was scheduled to perform March 30 at the Dubai World Cup, the world's richest horse race.  She successfully battled breast cancer in 2003.(AP Photo/Armando Franca)
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