Christina Aguilera’s official site released a statement today announcing the singer was forced to cancel her North American tour due to strained vocal chords. Doctors advised Aguilera to immediately rest and give her voice time to fully recover. The 28-city tour with special guest Chingy was scheduled to kick-off May 13th in Seattle. “I am extremely disappointed to have to cancel this tour. I was looking forward to being on the road again and spending time with my fans,” stated Aguilera. Refunds can be made at the point of purchase.