Pop superstar Miley Cyrus has reached the 1 million sales mark with her latest studio album, 'Bangerz, according to Neilsen SoundScan. 

It has been confirmed that the record has now shifted over 1 million copies and Billboard has also announced that her total album sales combined, including her work under the Hannah Montana title, stands at 15.9 million. 

The 'We Can't Stop' hitmaker was due to perform in Amsterdam tomorrow night (May 2), but it has now been revealed that the concert has been called off because she is still unwell after suffering a shock allergic reaction last month. Her Antwerp concert, scheduled for May 4, has also been postponed. 

A statement was issued on the cancellations, which reads: "Cyrus is continuing to recover from the severe allergic reaction she suffered on April 15. After a period of improvement, Cyrus' symptoms have returned and doctor's will not permit her to travel. Cyrus must remain under Doctor's care at this time. The London date at O2 Arena will proceed as planned on May 6th."

Watch Cyrus's Bangerz tour trailer below: