Kelly Clarkson's highly anticipated Las Vegas residency opening was postponed hours before showtime because the singer needs vocal rest after demanding preparations.

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 beyond grateful that you always show up for me," the singer said in a statement.Kelly Clarkson will return to the stage in Las Vegas a little later than expected.The "Since U Been Gone" singer announced that she has postponed the first two shows of her planned Studio Sessions residency at the Colosseum at Caesars Palace on Friday.