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Read More: Kety Perry premieres her music video "Last Friday Night"
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Rounding out July’s top five sellers are Katy Perry’s California Dreams tour, Lil Wayne’s I Am Still Music tour and U2′s 360 tour, which wrapped its two-year marathon run on July 30 in Canada. In the grander scheme of things, T-Swift’s concert clocks in at No. 6 on the list of overall events selling tickets through TicketsNow. The U.S. Open tennis tournament took July’s top honor, accounting for almost one-fifth of all tickets sold on TicketsNow.com. The tour starts on