Oprah Winfrey predicted Barack Obama would become America's next president.

The 59-year-old media mogul keeps in contact with Obama and introduced him to her famous friends at a party.

Speaking on 'The Jonathan Ross Show', which airs tonight (16.11.13), she said: ''That was one of those moments. I had seen him at the Democratic National Convention in 2004 and I remember sitting in my sitting room watching him alone and thinking, 'That man's going to be president one day and I hope I'm alive to see it'.

''I said to him in 2005... I had a party with all the legends, Diana Ross and Tina Turner, like 60 of them... and I invited Barack Obama there to speak and I remember introducing him to that entire group saying, 'This man will be president some day.'

''And I just felt like I had the platform, I had the Oprah show that reached millions of people every day and that was an opportunity to use my voice.''

Oprah said she kept in touch with Obama and he emailed her to tell her he was going to run for president.

She said: ''I got an email in 2007...from him that said, 'I think I'm going to do it. I think I'm going to do this thing.' It's great.''