N-Dubz star Tulisa Contostavlos is accused of setting up an £860 deal for 13.9 grams of cocaine to an undercover reporter.
She has denied the charge at Westminster Magistrates Court.
She appeared alongside rapper Mike GLC, also known as Michael Coombs, who denied a charge of supplying the drug.
More top news
Breezy and bright with some showers.
At least 13 dead and 80 injured after van ploughs into crowds in Barcelona.