(Cover) - EN Showbiz - Oprah Winfrey's final talk show will not feature any special guests, according to reports.

There has been much speculation over who will be given the coveted seat on the talk show queen's sofa after 25 years of conversation, but it is now being reported that Oprah will appear alone and recap the lessons she's learned during her time on the programme.

With just hours to go until the final episode is broadcast, sources say Oprah will not be welcoming any high profile celebrity guests.

"It was just her the whole time, a recap of what she believed in, what we've given her as viewers and what she hopes she has given us," an audience member told the Associated Press.

The last season of the popular chat show has already included celebrity royalty including Johnny Depp, Michael Douglas, and even President Barack Obama and his wife Michelle.

Oprah, 57, had a star-studded farewell bash on May 17 which was held at Chicago's United Center arena, with guests including Will Smith, Aretha Franklin and Tom Cruise.

Madonna gushed about the talk show host at the event, and revealed she was in awe of the American star.

"It's no secret that millions of people are inspired by Oprah. I am one of those people," she said. "Whenever I'm asked who my role models are, I always say 'dead' or 'alive'. The dead list is long, but the alive list has one name on it: Oprah."

The finale of The Oprah Winfrey Show airs on May 25. (C) Cover Media