Kelly Clarkson was "devastated" to postpone the opening of her highly anticipated Las Vegas residency

A source has now told People the decision came after intense rehearsals left her with vocal strain that threatened long-term damage.

The insider said: "She was devastated and felt terrible for fans that had travelled to see her.

"She didn't want to cancel any shows. She's been very excited about the Las Vegas residency and connecting with her fans."

The source added Kelly's apparent vocal issues came on suddenly following long days of preparation for the show.

They said: "Even as a seasoned singer, she pushes herself too hard.

"Vegas is very dry too, and it seemed this was an issue as well for the vocal health. She was pretty much forced to postpone to prevent long-term damage."

Kelly addressed fans directly in an Instagram post ahead of the first performance, writing: "Prep and rehearsals have taken a toll on my voice. I'm going to take this weekend and the week after to rest up so that we can deliver what you all deserve."

She added: "I want the shows to be perfect for y'all. The show is truly incredible. The musicians and singers are outstanding, and I want us all to start out strong."

Despite the last-minute postponement, Kelly is expected to begin her run on Friday 11 July.

People's source added: "She's ready to kick things off this weekend though."

The Studio Sessions residency marks Kelly's return to Las Vegas following sold-out performances at PH Live at Planet Hollywood Resort and Casino in 2023 and 2024.

She announced the new engagement in February, saying she was "so excited" to be back.

Outside of music, Kelly wrapped the sixth season of The Kelly Clarkson Show in June and confirmed season seven is slated to air this autumn.