Singer Celine Dion is delaying her new Las Vegas show because of a health condition I marches are a letter with the latest Salim DM's managements and she's dealing with severe and persistent muscle spasms that prevent her from performing D. and says in a statement she has been working on the show for eight months and she is saddened beyond words D. on show at the resorts world theatre was supposed to begin November fifth the shows in November January and February have been delayed but no new dates were announced DM still plans to resume her