Music icon Cher has been forced to reschedule several dates on her Dressed to Kill tour after developing an acute viral infection.

The 68-year-old was set to kick off the second leg of her sixth concert tour on Sept. 11, but has postponed shows in both New York and New Hampshire due to the illness. The entertainer is on full bed rest so doctors can continue to monitor her condition. No further details have been released, except that the canceled concerts will now take place in October.

The typically vocal celebrity has strangely not commented on her health, last updating her Twitter account on Sept. 6.

Playing 49 shows thus far, Dressed to Kill has been a major success for the musician, whose last concert tour lasted from 2002 to 2005. It has reportedly grossed an estimated $54.9 million since opening on Mar. 22 in Phoenix.

Related: Cher & Costume Designer Bob Mackie Reunite for Second Leg of Tour After Falling Out

For the second leg, Emmy Award-winning designer, Bob Mackie, will provide new costumes for his long-time friend and collaborator.

Unfortunately, this isn't the first time Cher has had to postpone concerts at the last minute. In 2008, the "If I Could Turn Back Time" singer suffered from asthma-related bronchitis, causing the cancellation of six Vegas shows in less than a month, which is said to have cost her $2 million in sales.

Back in May, fellow Grammy winner Paul McCartney was forced to scrap his entire Japanese tour due to a nasty virus. The worsening infection caused the 72-year-old to be hospitalized for a time, but was able to return to performing the following month.