"When there is no more room in hell, the dead will walk the earth."

Nicole Richie's weight battle has taken a turn for the worse, with the star being snapped looking positively skeletal.

With her ribcage protruding through her skin, the socialite and TV star had to hold up her American size 0 bikini which bagged around her wisp thin frame as she sunbathed on a beach in Malibu.

And it seems Nicole is not the only celebrity with a worryingly thin frame at the moment.

Pirates of the Carribean star Keira Knightley, was spotted in central London on Friday exposing an emaciated ribcage.

The 32A beauty admitted: "I haven't got boobs, I've got pecs."

The 21-year-old also recently complained when her breasts were digitally enhanced in posters to promote the movie King Arthur, in which she played Guinevere.