The Wanted were not allowed to look at Britney Spears while supporting her on tour.
The 'Glad You Came' singers claim that they were subjected to the diva treatment by the pop superstar's team when they were the opening act at her Manchester concert last year.
The British boy band - consisting of Max George, Jay McGuiness, Tom Parker, Siva Kaneswaran and Nathan Sykes - revealed they were not allowed to face the 'Toxic' performer when she exited her venue changing room.
During an interview on New York radio station Fresh 102.7, Tom said: "We signed a confidentiality thing that we should never say anything about what happened, but let's tell it anyway."
Siva added: "I was in the hallway with my tour manager. Basically we were looking with a laptop, trying to get WiFi ... facing the middle of the hallway. [Britney's] bouncers came down with her and told us to face the wall."
Tom continued: "As Miss Spears is walking through. We're like, come on!"
Siva added: "We turned around and I faced a wall for about 10 seconds until she got really far away."
Last week, The Wanted branded Christina Aguilera a "total bitch" after meeting her backstage on the US version of 'The Voice'.