Singer Lily Allen has decided to open up about her marriage breakdown for the first time on her new album.

The Not Fair singer, who has never spoken about her split from Sam Cooper, will share her feelings with her fans through the new LP, reported Grazia magazine.

"She's written loads of amazing tracks which collaborators have been urging her to put out, but she wants to wait until the whole package is ready," a source says.

Allen and Cooper are parents to two daughters, Ethel, five and four-year-old Marnie.