Kelly Clarkson left fans disappointed Friday after postponing the opening weekend of her Las Vegas residency.

The ‘American Idol’ alum made the announcement just 90 minutes before she was set to take the stage at Caesars Palace.

Clarkson explained via Instagram that she and her team had been working “24/7” to create an unforgettable experience for fans. However, due to vocal strain she had to cancel the show.

“The prep and rehearsals have taken a toll on my voice,” Clarkson wrote. “I want the shows to be perfect for y’all and I need to protect myself from doing serious damage so I am taking this weekend and next week to rest up so that we can deliver what you all deserve.”

The 43-year-old singer thanked her fans while acknowledging their disappointment, continuing, “I am beyond grateful that you always show up for me and I am devastated to have to postpone tonight and tomorrow’s opening at Caesars.”

Clarkson reassured her fans that she plans to be back on stage after taking time to rest.

“The show is truly incredible. The musicians and singers are outstanding, and I want us all to start out strong,” said Clarkson.