A series of celebrity guest hosts have stepped in to head The Kelly Clarkson Show, which didn’t give a reason for the 42-year-old’s absence, prompting regular viewers to voice their worry for her health.

She was first unexpectedly absent from a March 3 taping session, with fans of the show now picking up on her absence.

Actor Simu Liu stepped in at the last minute for the taping session, with him saying, “Kelly isn’t able to make it today. We’re sending her our very best.”

“I did not know that I was doing this until about five minutes ago when I arrived to promote my new movie Last Breath,” he said.

“I’m here now, and look, I’m not one to back down from a challenge.”

The Since U Been Gone singer last appeared on The Kelly Clarkson Show on March 5, and fans are growing increasingly concerned as the reason for her not hosting remains undisclosed.

There is also no word of when she will likely return to her own show, which is leaving fans even more worried.

Brooke Shields hosted the show earlier this week, with a selection of other famous faces also stepping up to the plate in the singer’s absence from her own show.

While hosting the show earlier this week, Brooke explained how it was nice to be doing the hosting for once, instead of being a guest

In the caption of a video shared on social media of Brooke hosting, it read: “Always be prepared!”

Fans were quick to praise Brooke for her sensational hosting skills.

“You did an amazing job on Kelly 2day!!! Loved the show,” one person said.

“You are great at hosting!” another added.

Willie Geist is guest hosting today (March 12), and Molly Sims will be guest hosting on Thursday and Friday (March 13 and 14).

CONCERN FOR KELLY GROWS

But there were also concerned messages regarding Kelly.

“I just want to know if Kelly is okay cuz it’s now been kind of a long time,” said one.

“Is Kelly Clarkson ok?” asked one fan on social media as Kelly continues to be a no-show on her own show.

A second said: “I respect Kelly Clarkson’s privacy, but I am very concerned about her.”

“Sad her followers aren’t being told why she missing,” penned a third.

A fourth person then said: “Where’s Kelly??”

While a fifth added: “We don’t need to know her business but need to know she is ok please.”

A sixth said: “Take care of yourself, sweet girl. I sure hope everything is okay.”

And a seventh gave the show an ultimatum when they said: “I’m not going to watch until Kelly comes back I’m concerned where is she?”

SPECULATION FOR ABSENCE

Neither Kelly nor NBC have publicly addressed her absence, and NBC did not immediately respond to a request for comment.

But despite her absence leaving viewers concerned, this isn’t the first time she has taken time off from work.

In 2022 she spent the summer on vacation with her children.

And her 2025 absence comes as she gears up for her Las Vegas residency at The Colosseum at Caesars Palace.

Kelly will be at the helm of 18 shows at the iconic venue.

She will kick off her residency on July 4, 2025, and is scheduled through to November 15, 2025.