Unlike a pardon, the commutation will not erase Johnson's conviction but will end her sentence.
On Wednesday, Alice had her life sentence commuted by Trump and Kim had the honour of sharing the happy news with the 63-year-old inmate over the phone.
Johnson wasn't eligible for parole, but the TV star met with the former reality TV boss, President Donald Trump, in the Oval Office after learning of Johnson's plight online.
Following word of the commutation, Kardashian West took to Twitter to express her excitement and to thank all of those for making this happen. Trump's clemency warrant ordered her to be released immediately from Aliceville Federal Correctional Institution in Alabama. Johnson, who had been serving a mandatory life sentence plus 25 years for a nonviolent drug offense, also had a plea for the president to review more cases like hers.
It was Kardashian West who informed Johnson of the president's decision, said Shawn Holley, a Kardashian lawyer who helped advocate for clemency.
Last week, Trump pardoned firebrand conservative commentator Dinesh D'Souza, who was convicted of violating campaign finance laws. She was serving a life sentence for "leading a multi-million-dollar drug ring that dealt in tons of cocaine from 1991 to 1994", the Tennessean reported.
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"Look, I think it is fantastic and laudable that she was able to achieve this in this case and I think it says a lot about power of celebrity at this moment in time that she, a reality star, an influencer, obviously appeals to a reality star president who obviously felt great about meeting with her and acted, it would seem to be, in a very positive way", he said.
Jack Johnson received a rare posthumous pardon last month, after another actor - Sylvester Stallone of Rocky fame - championed his case. "I would like to tell him that, please, please remember us, the others, who have been left behind".
Ms. Johnson has been in prison for the past two decades.
Kardashian West described the moment via Twitter.
"While this administration will always be very tough on crime, it believes that those who have paid their debt to society and worked hard to better themselves while in prison deserve a second chance", she added. She is forecasted to be released from prison soon. "And in Alice's case, it is a punishment that absolutely did not fit the crime".
"I want to say to President Trump, I am going to make you proud that you gave me this second chance in life", Johnson said during a Wednesday night phone interview with CNN's Anderson Cooper.
Johnson was convicted in 1996 on eight criminal counts related to a Memphis-based cocaine trafficking operation involving more than a dozen people. Court records show she has a motion pending for a reduction in her sentence, but federal prosecutors are opposed, saying in a court filing that the sentence is in accord with federal guidelines, based on the large quantity of drugs involved.