US President Donald Trump has said he held a "great meeting" with reality star Kim Kardashian West about prison reform.

After the meeting, President Trump tweeted: "Great meeting with @KimKardashian today, talked about prison reform and sentencing."

Kardashian West met President Trump at the White House on Wednesday in a bid to obtain a presidential pardon for 62-year-old Alice Marie Johnson, who is serving life without parole in the US state of Alabama for a first offence. 

Kardashian West had already held discussions with President Trump's daughter, Ivanka, and her husband, Jared Kushner, about the Johnson case. 

Johnson was sentenced to life without parole in 1997 for money laundering and drugs conspiracy charges. Kardashian West has drawn attention to the case, and others, on social media. An online petition to grant Johnson clemency currently has more than 250,000 signatures.

Kim Kardashian West arriving at the White House on Wednesday

The Keeping Up with the Kardashians star thanked the President for his time, writing on Twitter: "It is our hope that the President will grant clemency to Ms Alice Marie Johnson who is serving a life sentence for a first-time, non-violent drug offense."

She added: "We are optimistic about Ms. Johnson's future and hopeful that she - and so many like her - will get a second chance at life."

Kardashian West's husband, rapper Kanye West, met President Trump prior to his inauguration to discuss issues such as "bullying, supporting teachers, modernising curriculums, and violence in Chicago".

Donald Trump meets Kanye West in New York in December 2016 prior to President Trump's inauguration