Troubled singer Britney Spears has passed random drug tests that she was required to take in order to regain custody of her children.
The 25-year-old star, who is embroiled in a battle for her two children with ex-husband Kevin Federline, is also meeting other conditions laid down by the court, according to her lawyer.
Previously, the judge hearing Spears' case told the singer she was a "habitual, frequent and continuous" user of alcohol and controlled substances and ordered her to appear for random drug tests twice a week. Spears was also told to attend joint counselling sessions with Federline, as well as one-on-one parenting sessions.
The Baby One More Time star's lawyer, Sorrell Trope, told People magazine: "She's passed her random drug tests, there's been more than one.
"They came up negative," she added.
Trope told the celebrity magazine that the singer was working well with her parenting coach and said she was optimistic about her client's chances in her court case with her former spouse.
Another hearing has been set for October 26th to review the situation regarding the custody of Spears' sons.
Meanwhile the star was recently charged with misdemeanour hit-and-run, for driving without a valid licence. She could face up to six months in jail and be forced to pay a $1,000 (£500) fine if convicted.
The judge in her driving case ordered that the star be booked over the offence and Spears will appear at a Police station to have mug shots and fingerprints taken. She has also been ordered to appear at the court on October 25th, a day before her custody hearing.
Since splitting with Federline last November Spears' eccentric behaviour has led to a barrage of headlines about her emotional state, while the singer was also dropped by her management last month after a disastrous comeback performance at the MTV video music awards.
Spears recently completed filming the video for Gimme More, the lead single from her new album Blackout - her fifth since the smash-hit Baby One More Time was released in 1998.