A FIERY feud has erupted between the “Dancing with the Stars” judges – and it’s throwing the hit competition’s all-star edition into turmoil!

Off-camera, an irate Carrie Ann Inaba is no longer speaking to fellow judges Bruno Tonioli and Len Goodman, sources tell The ENQUIRER.

“The producers like the judges to mix it up on camera, which makes for good TV, but they don’t need any real conflict,” re­vealed a set insider. “The last thing they want is for one of them to get so teed off they leave the show.”

But Carrie Ann has hit her breaking point, warn sources, threatening to de­stroy the very core of the show – the three judges who have been fan favor­ites over the course of the ABC hit’s 15 seasons.

The judges decided be­fore this season that they would be more pointed in their comments and a little stingier with their scoring on the all-star edi­tion, which brings back top finishers from previous “DWTS” seasons.

And Carrie Ann is said to be furious at Bruno and Len because she thinks they’ve come on like “cud­dly puppies” when she believes they should be more critical.

“The judges agreed the contestants should up their game and they should as well,” said a close source. “But Carrie Ann thinks they’ve been wimping out because Bruno is still doing his usual cheerleading and, if anything, Len is trying to soften his image.”

“She’s disgusted and has told them so behind the scenes, leaving the three pointing fingers at one another and no longer speaking backstage. The producers just hope they can make it to the end with­out one of them walking out – it’s gotten that bad!”