Taylor Swift has revealed that she hasn't been confirmed to play the role of folk singer Joni Mitchell in a forthcoming movie.

The film is an adaptation of Sheila Weller's 2008 book Girls Like Us, which chronicles the lives of Joni Mitchell, Carole King and Carly Simon and how they reshaped American music.

In September, Variety magazine reported that the 22-year-old singer will portray Mitchell in the film, while other Hollywood actresses were testing to play Carole King and Carly Simon.

When Time mentioned the Variety article, Swift said: "That's actually not confirmed. I wish I could say it's confirmed!

"But the thing about movies that I've learned is - I've been reading scripts for five years, and you just don't know what ones are going to get greenlit and which ones aren't, so I can't talk about it unless it's the real thing."

Earlier this year, Swift said she "hoped" to take on the role, and added that she would do more acting only if it is "the right role" and "the right script".

She said: "I would love to sign on to do a movie if it was the right role and if it was the right script, because I would be taking time away from music to tell a big grand story, and spend all of my time and pouring all of my emotions into being someone else.

"So for me to do that, it would have to be a story worth telling."

Country singer Swift has previously played a small part in the hit romantic comedy, Valentine's Day, alongside ex-boyfriend Taylor Lautner and she also voiced a character in Dr. Seuss' The Lorax.