Kim Kardashian arrives at the Metropolitan Museum of Art Costume Institute Gala (Met Gala). Picture: Reuters

Kim Kardashian West is set to meet President Donald Trump today to discuss her quest to free imprisoned great-grandmother Alice Marie Johnson.

The 'Keeping Up With the Kardashians' star has been trying to find a way to get Alice - who was sentenced to life in prison without parole in 1997 on money laundering and drug conspiracy charges - released from behind bars since last year with the help her of her lawyer Shawn Holley and now she's hoping to get the president on board. 

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A source has told TMZ that the 37-year-old reality TV star and her legal advisor have booked in a meeting with Trump on Wednesday to lobby for a pardon for Alice, who is currently being held at Aliceville Correctional Facility in Alabama.

Kim did initially support Trump's rival Hillary Clinton in the election but it's believed the politician may be willing to help because his daughter Ivanka Trump is involved. 

Kim's husband Kanye West - with whom she has children North, four, Saint, two, and Chicago, four months - has also been supporting Trump over the past few months. 

Although it's a big move for Kim, it's believed the reality TV star will leave the cameras outside for her family's E! show and face the president alone. 

Alice's case became international news last year when Kim tweeted about it which, in turn, led to the 62-year-old penning the star a heartfelt thank you letter. 

She wrote: "Dear Ms. Kardashian, I am so humbled by what you are doing and have already done on my behalf. 

When I spoke with Attorney Shawn Holley and she disclosed the name of my benefactor, I had to take time to process and digest the news that you were the one she had been alluding to. 

There are no words to strong enough to express my deep and heartfelt gratitude.

"Ms. Kardashian you are literally helping to save my life and restore me to my family. 

I was drowning and you have thrown me a life jacket and given me hope that this Life Jacket I'm serving may one day be taken off. There are defining moments in history that have shaped the destiny of this nation. 

I believe that we are part of a defining moment. When Rosa Parks refused to give up her seat on that bus (the same year that I was born - 1955)... that was a defining moment."