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One Direction have been accused of copying a Def Leppard song, and the band are thus looking to sue the fairy children for their plaigiarism.

“Music lawyers will routinely scour hits like this one to see if there is any evidence that a band has either copied or cleverly mimicked a Def Leppard song,” a source has told The Mirror. “These cases can often take weeks to sort out because we are not talking about peanuts here – the 1D album is selling millions and if the title track goes out as a single it will generate even more money.”

They do sound similar... But isn't that inevitable in pop music? Have a listen for yourself.

One Direction: 'Midnight Memories'

Def Leppard: 'Pour Some Sugar On Me'