Reality TV star Kim Kardashian made her second visit to the White House this year to talk criminal justice, months after she successfully appealed for the release of a great-grandmother convicted of cocaine trafficking.

In a statement, the White House said she was one of around 50 people, including US President Donald Trump's son-in-law and advisor Jared Kushner, set to discuss the clemency process.

"The discussion is mainly focused on ways to improve that process to ensure deserving cases receive a fair review," deputy press secretary Hogan Gidley said.

Ms Kardashian has championed criminal justice reform in recent months.

Fixing tough sentencing laws had been a priority of former president Barack Obama's administration, but he failed to win congressional support, prompting a stream of presidential pardons and clemency actions.

Mr Trump, meanwhile, has advocated a more hardline approach to criminal justice.

However, during her first White House visit in May, Ms Kardashian met the president and called for the release of Alice Marie Johnson, a 63-year-old woman who served more than 20 years for a non-violent drug offence.

Days later, the White House said Mr Trump had commuted Ms Johnson's sentence.