Exhausted Beyonce cancels Belgium concert, ordered to rest Beyonce has been advised by doctors to rest after being diagnosed with dehydration and exhaustion/ Picture: AFP Source: news.com.au BEYONCE has cancelled a concert in Belgium because of dehydration and exhaustion. The singer's publicist says Beyonce has been advised by her doctors to rest. She was scheduled to perform at the Sportpaleis in Antwerp. The show will be rescheduled and tickets can be used at that show. Her next tour date is on Wednesday (Thursday AEST) at the same arena. The statement says "she is awaiting word from her doctors before making a decision." Beyonce, 31, launched her "Mrs. Carter World Tour" last month in Belgrade, Serbia. It wraps August 5 at the Barclays Centre in Brooklyn, New York.