Oops she did it again!

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Britney Spears has responded to criticism of her lip-syncing appearance on last weekend’s Video Music Awards — by blaming MTV for the disaster.

According to Radar Online, Brit thought she was the night’s headliner, and didn’t realize she’d have to followBeyonce‘s 16-minute spectacular. A source says, “Britney was legitimately upset about the way that the situation was handled at the VMAs. She felt like she was flat-out lied to by the producers. Britney thought that she was the headliner and could not believe how they screwed her over. Britney is saying she will never do theVMAs again.”

This wasn’t Brit’s first VMA crash landing: She bombed big time back in 2007 when she tried to launch a comeback by miming through “Gimme More.”