The St. Louis Post-Dispatch said Sunday night's performance by the "Hannah Montana" star was postponed until Oct. 28 because Cyrus, 16, fell ill with a case of strep throat.
Those with "paperless" tickets for Sunday's performance can use those tickets for the new scheduled performance date. Organizers are also offering ticket refunds at point of purchase.
Cyrus, whose hits include "7 Things" and "Party in the U.S.A.," fell ill Tuesday during a concert in Salt Lake City.
The Post-Dispatch said the pop star's case of strep throat also prompted the postponement of the singer's scheduled shows in Kansas City, Mo., on Saturday and Omaha, Neb., on Friday.
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