Composer Jeff Richmond has said that a Mean Girls musical adaptation is "60% written".

Richmond, who is married to Mean Girls actress and writer Tina Fey, revealed that there has been "quite a lot of progress on it."

Speaking to Yahoo TV, he revealed details of the project, saying: "Nell Benjamin of Legally Blonde fame, she's working with us as a lyricist. We've been working for a long time now.

"I'm going to say it's like 60% written, and it's being staffed creatively… We are looking to do some actual solid readings coming around this summer."

Fey confirmed plans to adapt Mean Girls into a musical  in 2013.