Celine Dion has been forced to pull out of an Australian concert due to ill health. The singer has postponed a Brisbane gig after contracting a minor throat infection and irritated sinuses. Dion says, "I've been looking forward to doing this show in Brisbane for so long. "I'm really sorry to disappoint my fans tonight." Tour promoter Michael Coppel says Dion will now perform in Brisbane on 31 March and in Melbourne on 2 April (08) .The Sydney and Perth concert dates remain unchanged.