California socialite Rebecca Grossman is seen in first mug shot from prison where she's locked up with other famous female killers

Convicted murderer Rebecca Grossman’s mugshot has been revealed after the former socialite started her sentence in the largest women's prison in the world. 

Grossman, 61, looked somber with bloodshot eyes in the prison picture, her dirty-blonde hair pulled back in a low pony tail. 

The mugshot is a stark contrast to her more lighter blonde look just before her six-week trial in Los Angeles where she was convicted of running over brothers Mark and Jacob Iskander, ages 11 and 8 respectively, with her Mercedes SUV in 2020.

Grossman was transferred on June 20 from the Twin Towers Jail facility in Downtown Los Angeles to the women's state prison in Chowchilla, Calif. - about four hours north from her posh Hidden Hills estate.

Rebecca Grossman was transferred to the Central California Women's Facility in Chowchilla last week

The Central California Women's Facility in Chowchilla is the largest women's prison in the world that includes a death row 

 A jury found Grossman guilty in February of two felony counts each of second-degree murder and gross vehicular manslaughter, and one felony count of hit-and-run driving resulting in death.

Prosecutors said a data recorder in Grossman's white SUV Mercedes showed she was speeding at up to 81mph and tapped her brakes, slowing to 73mp, less than two seconds before she mowed down Mark and Jacob Iskander, who were walking in a crosswalk.

After fatally striking the siblings, Grossman fled the scene. Prosecutors said she was racing with her then boyfriend, ex-pro baseball player Scott Erickson.

Although she was sentenced to 15 years to life in state prison, the former socialite could be eligible for parole in as little as seven to eight years, prosecutors told DailyMail.com.

Several former classmates and friends of the Iskander boys provided emotional testimony and asked the judge for the highest possible sentence during Rebecca Grossman's June 10 sentencing

Grossman, who co-founded a renowned burn center with her plastic surgeon husband Dr. Peter Grossman, lived a life of glamour while organizing fundraisers and rubbing shoulders with the Hollywood elite. 

Now the 61-year-old must spend her days and nights in a facility known for having sweltering conditions and allegations of sexual abuse by prison staff.

Last summer, prisoners at the Chowchilla facility complained the cooling system failed during a brutal heat wave, according to The Modesto Bee.

In December, the Chowchilla prison made headlines after dozens of former inmates filed a lawsuit claiming prison guards sexually and mentally abused them, according to ABC.

Grossman joins the list of other notorious female inmates at the Central California Women's Facility that houses over 1,900 prisoners, including 'house of horrors' mom Louise Turpin.

Also locked up at the same prison is Socorro Susan Caro, who is at the facility's death row for the 1999 shooting to death her three children - ages 5 to 11 - at their Santa Rosa Valley home.

Rebecca Grossman is pictured in May 2017 accepting the Betty Fischer Legacy Award at the Evening of Hope event at the Sheraton Universal in Universal City, Calif. Grossman was known for her years of philanthropy 

Louise Turpin is also serving time at the Chowchilla prison for starving and abusing her 13 children, including tying the kids to their beds and leaving them soiled in their own waste for days. Her husband, David, is also serving time at a California men's prison

Grossman will undergo a reception and classification process at Chowchilla that could take up to 90 days, prison officials told DailyMail.com.

During that time, California Department of Corrections and Rehabilitation administrators will review several factors, including her criminal background and her mental state.

Criminal legal expert and defense attorney Lou Shapiro said Grossman would more than likely place at a 'Level 1' area - the lowest level - because of her lack of a criminal record.

Shapiro added some inmates could qualify to be a 'trustee' or an inmate worker, who are selected for jobs in the jail such as cooking, managing the jail library or maintenance. 

'Although she was convicted of murder, it was not an intentional crime, so there is a good likelihood she would be at a Level 1 part of the prison and could be a trustee,' Shapiro told DailyMail.com.

Former inmates at the Central California Women's Facility in Chowchilla filed a lawsuit claiming prison guards sexually and mentally abused them

Socorro Caro is another inmate at the Chowchilla prison where Rebecca Grossman has been transferred to start her 15 year to life sentence. Carro, who was a wife of a LA physician, murdered their three children  with a gun on Nov. 22, 1999. She is serving her time at the facility's death row

During her sentencing on June 10, a Grossman sobbed uncontrollably and begged parents Nancy and Karim Iskander for forgiveness.

'I just wanted to be a human being,' she said while addressing Nancy Iskander directly. 'When I couldn't be a human being and talk to you parent to parent, mother to mother... I wanted to leave this world because I didn't want to be here anymore and you have to believe me. And I believe God is in this room right now, and I believe He knows the truth.

'He knows that if I had seen anyone, I would've thrown myself to the brick wall. I wanted God to take my life. I don't know why God didn't take my life. I wish He would take my life. And if I could give my life right now and say to God, "Could you just please bring Mark and Jacob back," I would tell God to take my life. I am so, so sorry!'

Despite her lack of a criminal record, prosecutors said the disgraced socialite deserved a 34 years to life sentence for taking the life of the two young boys.

'We are obviously disappointed,' Deputy District Attorney Ryan Gould told DialyMail.com. 'We felt that there were two lives taken and therefore she should be punished for the two separate lived she look. 

'Her lack of remorse, even in court when she turned to look at Nancy and addressed her, shows that she only said she is sorry for what happened. She never once said, "I'm sorry for what I did." She has never taken responsibility for her own actions. It's always been somebody else's fault.'

Grossman already filed a notice of appeal the same day she was sentenced, according to court records viewed by DailyMail.com. 

Nancy Iskander has said she plans to go to the prison and demand Grossman to acknowledge that she was the one who killed her two young children.

'My plan is to give her a visit in prison, in a few months or maybe a year, and I will ask her that question directly. I will say, "Are you able to say, 'I am sorry I killed them?' This will allow me to forgive, because I need to get through what she's done.'