Research has suggested that women who are overweight are often in denial of their size.
Conducted by the University of Texas, the study found that around a quarter of the obese or overweight women studied "misperceived" their weight as normal.
The report, which focused on over 2,000 women in the US, found that 52 per cent were actually overweight but 23 per cent of those saw themselves as being of normal weight.
In contrast, 16 per cent of the women who were of normal weight misperceived themselves as being overweight.
The Daily Mail reported British experts as claiming that it is "inevitable" that the bigger people will be seen as normal as the population gets increasingly fatter.
Dr David Haslam, chairman of the UK's National Obesity Forum, told the paper: "Everyone is getting bigger together but this doesn't mean you are a healthy weight."
The report is published in the journal Obstetrics & Gynaecology.
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