Cedric Yarbrough Speaks against Mariah Carey's infamous diva reputation in Will Ferrell's new movie 'The House'

Actor Cedric Yarbrough, from “The House” is speaking out against Mariah Carey’s diva attitude on the set of the upcoming Will Ferrell and Amy Poehler film.

On Wednesday, Cedric Yarbrough, who has a small role in the film, came out with guns blazing on Facebook about the Grammy-winner’s tardiness and overall bad attitude when she was hired to do a cameo in the movie about a suburban couple that opens an illegal casino in their basement.

"After waiting for her for 3-4 hours," he wrote, Carey showed up and refused to participate in her scene. "'Darling, I would never do it that way…' I heard her say those exact words. She then requested a large fan for her hair to be blown around…This lady was unprofessional and borderline abusive to our director."

Yarbrough said he felt comfortable condemning Carey after Ferrell revealed some of her prima donna behavior on "Late Night with Seth Meyers" Tuesday evening. Ferrell had said that Carey's scene in his movie was axed because she showed up late and had a list of demands.

"Let's put it this way,” Ferrell said. “At about midnight, I got a knock on my trailer. 'You can just go home. We're not going to get to you … we're still filming' (Carey)."

And Ferrell’s comments come after another “House” star, Rob Huebel, blasted Carey on Sirius XM's Entertainment Weekly radio show.

"F---ing what is going on with her," he said. "It was bananas. I hear she showed up like four hours late, and then when she got to her trailer, she came out and was like, 'Um, first of all, there needs to be all white roses in my trailer … someone has to go get me white roses.'"

One unlucky production assistant was then sent out to find the flowers Carey demanded before she moved on to more absurd requirements.

"She was like, 'You guys, I'm so sorry, I have to have those little stuffed lambs — my fans are called lambs — and so I need stuffed white lambs,'" Huebel said.

The "We Belong Together" singer then let the crew know she no longer wanted to perform the song she was hired to sing, or die the way the writers envisioned, according to Huebel, and suggested some changes.

"She was like, 'Uh, I don't feel like my character would get killed by bullets, like, what if I deflected them like Wonder Woman?" Huebel said. "Mariah, we don't have time, you're getting paid so much money, we have you for one day, we don't have time to argue with you. Just do it."

 The movie opens June 30.