Tulisa Contostavlos punched the air with delight and hugged supporters after her trial was thrown out at Southwark Crown Court.
The former X Factor judge had been accused of brokering a cocaine deal with an undercover reporter, a charge she strongly denied throughout.
The judge threw out the case after deciding there were "strong grounds" to believe that the undercover reporter Mazher Mahmood had "lied" at a pre-trial hearing.
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