X Factor judge Tulisa Contostavlos has been accused of making decisions on the show based on the class of her contestants.
The N-Dubz singer is said to have axed popular boyband The Keys from her final line up for the live shows because they are too posh.
Three of the five singers, Rohan Kapoor, Nick Jackson and Dan Lipman, all aged 24, went to all a public school.
While the band proved popular receiving praise from all four judges as well as building a fan following on social networking sites, Tulisa decided to axe them from the competition ahead of the live performances.
Viewers will see the decision aired this weekend as Tulisa makes her choices for the live shows.
The Daily Mail quotes a source as saying: "The lads were absolutely devastated but they felt Tulisa didn't warm to them. She gave them the impression she saw them as posh toffs trying to be street rappers."
"The other groups like The Risk had a more urban street-wise feel about them and the lads from The Keys are convinced that's why Tulisa didn't pick them.
"Perhaps she thought they were trying to be like a posh N-Dubz. It smacked to them of a decision based on a difference in their social backgrounds rather than their ability to sing."
