The Class A Factor

The Crown Prosecution service authorized police to charge the singer following a sting operation set up by The Sun On Sunday.

The paper ran the story following an investigation by Mazher Mahmood, formerly an undercover reporter for News Of The World.

Contostavlos was allegedly filmed offering to supply cocaine through a friend at the Nobu restaurant in London.

Her friend reportedly sold half an ounce of cocaine at London’s Dorchester hotel. In August, two months after Contostavlos was originally arrested along with musician Michael Coombs, her manager Jonathan Shalit said The Sun’s story was the result of a deliberate attempt to entrap her.

The paper has said its investigation was “entirely justified and in the public interest.”

The singer, who first made her name with hip-hop group N-Dubz, is to appear at Westminster Magistrates Court Dec. 19.