Cameron Diaz has become the latest star to say she is worried about the influence of ultra-skinny celebrities.

Her comments echo those of Billie Piper and Kate Winslet, who both criticised the phenomenon last week.

The Hollywood actress, 34, tells ITV1 show Parkinson: "I think it's terrifying, it's tragic and sad."

And she added: "I think that it's a sickness, something that's going on in someone's head where their perspective is off.

"We get ideals from images that we see and there certainly should be more responsibility put on those people who are putting those images out into the world.

"Let's be a little bit more responsible to what's realistic."

She adds: "I'm a skinny girl, so all my life all I have ever wanted to be is curvaceous and voluptuous, have everything falling out everywhere. Some people ... their perception and their perspective is completely askew."

Last week, former Doctor Who star Piper said Victoria Beckham should not be a teenage role model - because of her tiny frame.

The star, who suffered from anorexia, said she worried that younger people were looking up to skinny stars.

Former singer Piper, 24, said: "I think the whole size zero debate is disgusting. Winslet also joined the debate, describing the trend as "unbelievably disturbing".

Nicole Richie and Kate Bosworth are among the celebrities whose shrinking figures have been the subject of debate.