Sources tell Page Six fellow judges Levine and Blake Shelton have formed an alliance against Aguilera, whose much bigger paycheck, attention-stealing diva stunts and doting makeup team have rubbed the guys the wrong way.
Low-key Levine can't grasp why Aguilera, who seems to get on a little better with Cee Lo Green, is being paid $225,000 per episode, in comparison to their $75,000 rate, and has a huge entourage, including two hair and makeup people, a producer and an assistant.
"They are all so annoyed by her," a source told us. "Every time she walks away with her entourage, they talk about her behind her back. She holds people up and never apologizes."
While Aguilera is the most vocal on the show, sources say she won't speak to the other judges during commercial breaks.
"When the cameras are rolling, she literally won't shut up," an insider told us. "It is all about her."
The production team is also playing into the rift -- Aguilera's supporters wear "Team Christina" T-shirts on the Studio City set.
Despite the differences, another source said the judges appeared to be getting along after the show Tuesday night at a bash thrown by Shelton and Miranda Lambert, at which Aguilera was still wearing her "Team Christina" shirt.
We hear that despite the disagreements, Aguilera and Levine are working together and recently recorded a track that will be released Tuesday.
Levine's rep said, "This is absolutely false. Adam loves Christina, and they just recorded a song together. All the judges had a party at Blake's house the other night after the show."
Aguilera's rep told us, "No comment."