British singer Tulisa Contostavlos appeared in court again on Thursday (09Jan14) over allegations she arranged to supply more than $1,200 (£800) worth of cocaine to an undercover reporter. The former N-Dubz member, 25, was charged in December (13) with being involved in the supply of 13.9 grams of the class A drug after a sting by U.K. tabloid The Sun on Sunday. She denies the charge. She was called to appear at Southwark Crown Court in south London on Thursday for a preliminary hearing. The singer, who refused to comment as she arrived for the case, is due back in court on 21 March (14). She is due to stand trial on 14 July (14), the day after her 26th birthday. Her co-accused, rapper Mike GLC - real name Michael Coombs - will stand trial on the same date, accused of supplying cocaine.