Singer Madonna performs during her Sticky and Sweet tour at the Dvortsovaya Square in St.Petersburg, August 2, 2009. [Xinhua/Reuters]
![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/site1007/20090803/000bcdb95f1d0be0ca6b20.jpg "Singer Madonna performs during her Sticky and Sweet tour at the Dvortsovaya Square in St.Petersburg, August 2, 2009. [Xinhua/Reuters]")