The singer is charged with helping an undercover reporter from The Sun on Sunday newspaper obtain 13.9g of cocaine worth £860.It is alleged Contostavlos, 25, told reporter Mazher Mahmood - dubbed the "fake sheikh" - that she could arrange for him to buy the drug, between 20-24 May last year.She denies the charge, but she has not entered a formal plea in court.At Southwark Crown Court on Tuesday, the singer spoke only to confirm her name.She appeared alongside rapper Mike GLC, also known as Michael Coombs, 35, for a plea and case management hearing.Coombs, who also spoke only to confirm his name, denies a charge of supplying the drug on 23 May last year at the Dorchester Hotel in Central London.The pair were bailed to return on 25 June when a three-day legal argument hearing will take place.Judge Alistair McCreath told them: "You are both free to go. If you want to come on any further application you may do so."You must come on 25 June when I'll deal with pre-trial matters."You may both go on unconditional bail."Both Contostavlos and Coombs will stand trial on 14 July.