Sugarland has postponed two North Carolina concerts due to illness. The duo was scheduled to perform Thursday (April 10) in Wilmington, N.C., and Friday night (April 11) in Asheville, N.C. The Asheville show will now take place on Sept. 13, followed by Wilmington on Sept. 14. A Saturday night show in Knoxville, Tenn., has not been affected. Sugarland launched their new tour earlier this month with two concerts at the Fox Theatre in their hometown of Atlanta.