Peaches Geldof has been talking about how she achieved her thin figure, and she's come under criticism for admitting that she goes on a juice diet for up to a month at a time.
Peaches looked painfully thin at The Girl With the Dragon Tattoo premiere in London on Monday.
She posed with her new fiancé Thomas Cohen and her engagement ring, but rather than coo over her sparkler we couldn't take our eyes off her skinny frame.
When Peaches lost weight between March and July, going from a reported 10st to 8½st, there were fears her changing shape was due to drug use, but she's claimed it's down to the juice diet.
She said: "I do juicing. You juice vegetables and then you drink it three times a day. It's gross. I do it usually for about a month. I have no willpower but with the juicing I'm like, 'I have to do it because I have to lose this extra ten pounds.'
"I will lose it then I'm back going mental for the chips. I'll juice and then I eat chips."
[See also: Peaches Geldof gets engaged to Thomas Cohen]
[See also: Peaches Geldof reveals secret to her weight loss]
A spokeswoman for the British Dietetic Association told the Sun: "Peaches joins a long line of celebs who are braindead when it comes to nutrition. Surviving on fruit is a very dangerous diet.
"Peaches is at high risk of electrolyte abnormalities which could lead to acute cardiac arrest.
"Rapid dieting like this not only makes you lose muscle strength but wastes away your internal organs."
She added: "It is what kills anorexics. It is a stupid approach and it is irresponsible to promote this sort of disordered eating. It's worrying that somebody who has money and access to contacts would pick such a ridiculous way to diet."
Peaches has revealed the reason she's lost weight, saying: "If you open any high-fashion magazine, the girls in it are stick-thin and then they've been airbrushed down to the point where it's just ludicrousness. I have days when I wake up and think, 'I'm so fat.' "
We can assure you Peaches, you aren't fat in the slightest.