Rosie O'Donnell insists Oprah Winfrey is not homosexual

Actress Rosie O'Donnell has voiced her support for Oprah Winfrey, insisting that the talk show queen is not a homosexual.

O'Donnell jumped into the ring for the media mogul at New York City's Jingle Ball concert.

"I think that she's always told the truth so why people wouldn't believe her, you know, I don't know," the New York Daily News quoted O'Donnell as telling ABC News.

"Anything that she says, I believe is the truth... she's not a fake.

"I thought she was really great on that road trip she did with Gayle when they were going into the camper and Gayle said, 'Let's spice up those lesbian rumours.

"I was cracking up. Listen — she's pretty magnificent in every capacity and no, I don't think she's gay," O'Donnell said.

O'Donnell thinks the speculation about Winfrey's sexuality stems from a general lack of knowledge about, or experience with, close female friendships.

"People don't really understand or don't have the privilege of seeing a friendship between two women that is that deep," she said.

"I have the same best friend that I've had since I was three. I know the intensity of that relationship and what it feels like — to have someone you can depend on no matter what.

"So, I get it. And I don't think she was defending it as much as just answering all the speculation. She didn't seem defensive to me. If anything, it's just insulting to her integrity that people would consider that she was lying."