To watch Taylor Swift conquer the pop and country worlds over the last few years, you might think there's nothing she can't do -- but, unfortunately, for fans hoping to see her on tour this week, she can't perform with bronchitis.

Having already canceled her Louisville stop last week, Swift is under doctor's orders to beg off her scheduled dates in Atlanta and Charlotte this weekend.

Swift said, "It breaks my heart to miss out on this weekendís shows with my friends in Charlotte and Atlanta. I would never cancel if I thought I was physically able to perform these shows. I am so sorry to the fans, but I look forward to seeing you when we come back through your towns, which we will do."

Swift's tour is currently scheduled to resume in Montreal on July 14. In the meantime, her latest album, 'Speak Now,' continues its radio domination, with one single, 'Mean,' in the country top five and another, 'Sparks Fly,' in the pop top 20.

[Taste of Country]