Kim Kardashian enlists her legal team to support former child sex slave Cyntoia Brown who killed her abuser (Details, pics)

Kim Kardashian has enlisted her legal team to help in the case of Cyntoia Brown, a former child sex slave who killed her abuser when she was 16.

Brown's case went viral this week when it emerged she had already served 13 years of a life sentence, and the now 29-year-old has secured the backing of the Kardashian in her clemency campaign.

The reality TV star, who has been vocal in her disgust at Brown's case, has instructed her lawyer Shawn Holley to help the campaign - and that as well of Alice Johnson's - another prison inmate whose case has gone viral.

Johnson, a 62-year-old grandmother and former FedEx worker, is 21 years into a life sentence for her first-time, nonviolent drug conviction, where she acted as a messenger between drugs rings.

'Kim asked me several weeks ago how she could help Alice Johnson in her fight for justice. We then began corresponding with Alice and her team of lawyers,' Holley told the Daily News.'

Since then, Kim has championed the cause of Cyntoia Brown and asked me to help her get involved in that effort as well,' Holley said on Thursday.

Then 16-year-old Brown was sex trafficked by a pimp named Kutthroat who was physically, sexually and verbally abusive and eventually sold her to 43-year-old Nashville realtor Johnny Allen, a court heard during her trial in 2004.Brown, who feared that former Army sharp shooter Allen planned to kill her, eventually grabbed one of her captor's guns and killed him, Fox 17 reports.

But when the case came to court, she was sentenced to life in prison. She won't be eligible for parole for at least 51 years. The case is getting new attention after a tweet showing Brown in court with the hashtag #FreeCyntoiaBrown, went viral on Monday.

Celebrities beyond Kim Kardashian began using their fame to call for Justice for Brown.

Kim Kardashian tweeted: 'The system has failed. It's heart breaking to see a young girl sex trafficked then when she has the courage to fight back is jailed for life!''We have to do better & do what's right. I've called my attorneys yesterday to see what can be done to fix this. #FreeCyntoiaBrown'.

British model Cara Delevingne was also horrified, writing in an Instagram post: 'The justice system is so backwards!!! This is completely insane #freecyntoiabrown.'

Singer Rihanna said something had gone 'horribly wrong' for a sex trafficked, 16-year-old girl to be jailed for life for shooting her abuser. 'We somehow change the definition of #JUSTICE along the way??' she wrote in an Instagram post, 'cause..... Something is horribly wrong when the system enables these rapists and the victim is thrown away for life!

To each of you responsible for this child's sentence I hope to God you don't have children, because this could be your daughter being punished for punishing already!'

Singer Lauren Jauregui‏ also tweeted her fury, demanding the courts 'stop punishing and shaming victims, telling them it is their fault is untrue.'

During her trial, Brown said she had been a runaway who was forced into prostitution by Kutthroat.

She testified that she was repeatedly hit, choked, and dragged around, and almost always had a gun pointing at her. Before she was sold to Allen, she'd repeatedly been raped and given drugs, which she said made her paranoid.

Brown said that when she arrived at Allen's home she found it was full of guns. She became convinced he was going to kill her.

But prosecutors said that the motivation for murder had been robbery as the teen had taken Allen's wallet and guns after shooting him.

Brown, now in her 20s, was sentenced to 51 years to life for first degree murder and prostitution at the Tennessee Prison for Women.

The shocking sentence actually helped change the laws surrounding child sex slaves and today, minors cannot be charged with prostitution.

Derri Smith, the Founder of End Slavery, told Fox News: 'She did kill someone, she deeply regrets it, but she was a child and she was being exploited. 'Brown's case was featured in Daniel H. Birman's 2011 PBS documentary, Me Facing Life: Cyntoia's Story, which revealed she came from three generations of horrific abuse against women as her grandmother and mother had been raped.'

She had no chance,' Birman said of Brown. Brown, now 29, has completed her associate's degree behind bars and is reportedly working on her bachelors.

She also works as an unpaid consultant for the Juvenile Justice system. 'I myself can create opportunities to help people [behind bars],' Brown said.

In 2011, Birman's film led Tennessee to enact a new law which grants immunity to children who are forced into prostitution before the age of 18.The documentary revealed that Brown had been at risk since before she was born.

At her trial, her mother testified that during her pregnancy with Brown, she drank at least a fifth of a gallon of liquor a day. Her lawyers argued to the court that Brown's judgment was impaired because she contracted Fetal Alcohol Spectrum Disorder.

The attorneys presented scans of her brain which they said showed the effects of the illness.

Fetal Alcohol Spectrum Disorder is known to adversely affect impulse control and cognitive abilities.