Lily Allen "lost" her identity when she tried to return to the spotlight

She said: "I was 14 stone and I had to lose all that weight. I wasn't eating, I wasn't sleeping. I'd always been in control of my image, but I'd been a mum in slippers and a dressing gown for two years. I hired a team to dress me up with slick hair, nails, makeup; all harsh and pop star-y. I felt like I was in Alice in Wonderland.

"'Who am I? What is all this? What are these songs? Why am I nowhere near my children?' Heh. 'Where's the vodka?' I lost my sense of self. I lost my identity. I was being a bad mum. I was being bad at my job. I'd wake up on a tour bus in the middle of Wisconsin and be so hung-over. I cheated on my husband. All I wanted to do was be with my kids. I wasn't even making any money."

And the 33-year-old singer "couldn't have been more isolated" if she tried as she had lost her marriage and all her friends.

She added to Vulture: "I lost my marriage, I lost my house, I lost my mind. I literally had to hit rock bottom and build myself back up. Then I had my stalker. I couldn't have been more isolated. I lost all of my friends. I couldn't talk to anybody. I was on my own."