Miley Cyrus was forced to postpone more concert dates today due to illness.
According to the 21-year-old singer's website, her May 2 date in Amsterdam and her May 4 performance in Antwerp, Belgium have been moved to June.
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Miley originally suffered an allergic reaction on April 15, which was responsible for the first interruption on her Bangerz Tour.
"After a period of improvement, Cyrus' symptoms have returned and doctors will not permit her to travel," said a news release on her website. "This type of extreme reaction can last up to 27 days and Cyrus must remain under doctor's care at this time."
Miley still plans to proceed with her May 6 date at London's O2 Arena and tickets for the two postponed shows can be used for their new dates, according to the news release.