Lily Allen has admitted that she suffered from the eating disorder bulimia in 2009.

In a documentary filmed last year, which follows the singer and her sister as they set up a vintage clothes shop, Allen explains how she got so skinny.

“There was a point last summer (2009) where I had an eating disorder, I used to vomit after meals,” she says. “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.”

She adds, “I would like to be the skinniest, mini-est person in the world, but I know I can’t do that without being unhappy. I like my food.”

Catch ‘Lily Allen: From Rags to Riches’ on March 15th at 10pm on Channel 4.

Watch Lily perform ‘It’s Not Fair’ live on ‘Later With Jools Holland’ here: