Kelly Clarkson said rehearsals for her new Las Vegas residency have "taken a toll on my voice" so she postponed the July 4 opening of the show to avoid "doing serious damage." She told fans, "I am taking this weekend and next week to rest up so that we can deliver what you all deserve.

I am devastated to have to postpone tonight and tomorrow’s opening at Caesars. The prep and rehearsals have taken a toll on my voice,” she wrote in a statement shared on Instagram Friday.

Kelly Clarkson has been left "devastated" as she shares worrying health update before cancelling first Las Vegas residency show.