Cher talks about touring at 72, Christine Baranski reveals a rather unusual claim to fame, Rupert Everett talks about Oscar Wilde, Natalie Dormer talks about her latest role and Tom Odell performs live in the studio.

Cher, talking about being cast in Mamma Mia! Here We Go Again as Meryl Streep's mother, and asked if she was offended, says, "I am older than her - by four years! When they asked I said, 'That's absolutely fine, that's cool.'"

Asked if she had to be talked into the role, she says, "Yes. But, my agent called me and said, 'You're in the new Mamma Mia film' and then hung up. I didn't have much choice!"

Asked if she has seen The Cher Show, the musical about her life she says, "I have seen a piece of it and will see it all in Chicago. It was a bit nerve-wracking to see so many personal things portrayed that you thought was a good idea to talk about once but, to see it on stage, you just want to stick needles in your eyes."

And on touring after she had previously said she wouldn't, Cher says, "Who knew I would be touring at my age. No one expects to be working at 72 and I didn't think I'd be doing it." Asked when she might stop, she says, "I don't have a number in my head."

And, on whether there is a new album in the pipeline, she says, "I am working on one right now."

Christine Baranski, talking about the joy of working on Mamma Mia 2 says, "We had so much fun. Everyone had been waiting for the sequel. 10 years on, they've got it so right and we were all so happy."

Revealing a rather unusual claim to fame, she says, "Sarah Silverman told me that Michael Sheen refers to his penis as 'The Great Christine Baranski.' I have no idea why. I'd like to meet him one day and ask him what was he thinking." Adding, jokingly, "Perhaps it's because of my long-lasting career or maybe that I am long and thin!"

Rupert Everett, talking about his new film about Oscar Wilde The Happy Prince, which he wrote, directed and stars in, says, "I did it because I wasn't getting any parts. I had to be proactive as an actor otherwise I would have been left on the shelf. It took ten years to make it happen and historically I have been known as a bit of a flake so it's remarkable that I held on to it for so long."

On the rave reviews the film has received, he says, "I am thrilled, I'm pinching myself. When I was making it I thought, 'Never again.' But now, I am bursting with ideas."

Asked about wearing a fat suit in the play version of Oscar Wilde's story, he says, "I had a low-hanging bum, moobs and my very own 'Great Christina Baranski' before I realised that the people in the front few rows could focus on nothing else so I had it cut down to size!"

Natalie Dormer, talking about her new film In Darkness, which she co-wrote with her partner, she says, "I did it because there was a lack of three dimensional, meaningful roles for women."

Asked about taking her role in the new BBC series Picnic At Hanging Rock, she says, "I had thought that I would never put on a corset again, but I fell in love with the character."

Tom Odell performs If You Wanna Love Somebody live in the studio before joining Graham for a chat about his new album.