Kate Hudson reportedly thinks that Lea Michele is "a total diva."

Kate is a guest star on Lea's hit TV show Glee where she appears in six episodes of the show's upcoming season.

While filming, Kate apparently thought Lea was incredibly demanding.

"[Kate said Lea was] a total diva," an insider told Us Weekly.

Calm Kate was said to be appalled by Lea's alleged temper tantrums.

The actress wasn't fond at all of Lea's impatience.

"Kate says Lea is a nightmare," the source detailed.

"Once, during a technical delay, Lea snapped her fingers and said, 'Let's go. I have plans!' "

While on set, Kate spent as much time away from Lea as possible.

She found solace in the company of other castmembers.

"Kate's keeping her distance," the insider said.

Lea's representative says all of these claims are absolutely false.

The spokesperson contends that Kate and Lea enjoyed being around one another.

"Lea has had a great time with Kate," the spokesman said.

The new season of Glee airs in the US September 13.