The former X Factor judge was pictured outside Southwark Crown Court on Monday morning (14 July) in a black patterned frock, white blazer and black heels.
N-Dubz singer Tulisa has been charged with being involved in the supply of class A drugs following a newspaper sting operation in June last year.
The 'Young' singer has been accused of offering to help an undercover reporter meet an alleged drug dealer.
She has denied the charge and her lawyer has said Tulisa looks forward to proving her innocence in court.
Today marked the first day of her trial at Southwark Crown Court. It comes the day after she celebrated her 26th birthday.
The trial is expected to last two weeks.
Got an iPad or iPhone? Reveal Mag is specially designed to fit!