Girls Aloud star's comments push Lily Allen over the edge

Lilly Allen

Lily Allen has blamed Girls Aloud star Cheryl Tweedy for sending her into a spiral of depression over her looks.

The singer posted a tearful confession on her MySpace page complaining she felt "fat and ugly" and saying she was considering plastic surgery.

Allen has revealed it was brought on by reading hurtful comments in which Tweedy branded her a "chick with a dick".

She says Tweedy's jibe - coupled with constant comparisons to supermodel Kate Moss as they launched rival fashion ranges - pushed her over the edge.