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The cancellation marks the first time the 21 year old has ever been forced to scrap a show due to ill health.

A post on the venue's website reads, "Due to illness and under doctor's orders, Taylor Swift has been forced to postpone tonight's performance, and the show has been rescheduled for Tuesday, October 11. Taylor is sorry to have to disappoint her fans in

Louisville, but is looking forward to coming back this fall. Tickets will be honoured or refunds available at point of purchase."

The singer has also apologised to fans, writing in a post on Twitter.com, "Louisville, I so sorry to have to postpone this show to Oct 11. This is my first time having to do this. I'm so, so sorry."