Lily Allen has admitted that she has fought an eating disorder, getting sick after meals at the peak of her fame.
The 25-year-old singer also talks about losing her unborn baby last year in a Channel 4 documentary to be broadcast next week.
In the documentary, about the launch of the star's new career as a clothes shop owner, she said: "There was a point last summer where I had an eating disorder. I used to vomit after meals.
"It is not something I am proud of. But I tell you what, a lot of people used to come up to me and tell me how great I looked and I was on the cover of every magazine with them saying 'Lily is looking amazing - look how much weight she has lost'.
"I thought I looked good and it was great to try on clothes and walk out of the shop feeling a million dollars. When you have been a victim of people saying the complete opposite, you want more of it."
The documentary was filmed before Lily suffered her second miscarriage while six months pregnant last November, but the film crew went back to continue filming her story after the loss of her baby.
She told the programme: "It was a really long battle - and I think that kind of thing changes a person."
Lily, who previously renounced Twitter and Facebook for four months, saying that her use of the social networking sites had become an "addiction", tweeted later: "Have just Googled myself, am depressed. Going home and switching off broadband."
She added: "I just get upset when some people can't see how nice and brilliant I am. Good day to you all."
Lily Allen: From Riches To Rags begins next Tuesday at 10pm on Channel 4.
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