Britney Spear's tour grossed: 43.7 million Lady Gagas last tour grossed: 133.6 million Beyonce's last tour grossed: 53.5 million **Michael Jacksons:This Is It tour was sat to gross 252 million I agree with @MJSupporter Michael is and always will be number.Then Lady Gaga.Then Beyonce.Then Britney Shamus!(: