joan rivers abcFriday’s show at the Basie was one of 26 appearances the 81-year-old comedian had lined up between now and late November, ABC News reports.  (Click to enlarge)

One day before she was scheduled to appear in Red Bank, comedian Joan Rivers was hospitalized in New York Thursday.

With the the tart-tongued 81-year-old said to be in critical but stable condition, the Count Basie Theatre has postponed a show slated for Friday night.

From the Basie website:

We ask that customers hold on to their tickets, as they will be honored for the new date. Stay tuned to and our social media channels for information on this new date. Everyone at the Count Basie Theatre is relieved to hear that Ms. Rivers’ condition has stabilized, and we look forward to hosting the iconic comedienne in the near future.

Rivers stopped breathing during outpatient throat surgery and was taken by ambulance to Mount Sinai Hospital, according to ABC News.