Singer Madonna performs during her Sticky and Sweet tour at the Dvortsovaya square in St.Petersburg, August 2, 2009. [Xinhua/Reuters]
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![Singer Madonna performs during her Sticky and Sweet tour at the Dvortsovaya square in St.Petersburg, August 2, 2009. [Xinhua/Reuters]](http://images.china.cn/attachement/jpg/site1007/20090803/000bcdb95f1d0be0c7691c.jpg "Singer Madonna performs during her Sticky and Sweet tour at the Dvortsovaya square in St.Petersburg, August 2, 2009. [Xinhua/Reuters]")