Kelly Clarkson has delayed the start of her Las Vegas residency, just a few hours before she was set to take the stage at Caesars Palace, due to vocal issues. The singer was scheduled to perform at the Colosseum at Caesars Palace on July 4,

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 announced that she would be canceling the first two nights of her brand-new Las Vegas residency shortly before she was due to take the stage for the first time on Friday night. Clarkson wrote in an Instagram post,