Size 12 and overweight???

[AB Asks]

A survey has shown that half of women want plastic surgery. The poll of 25,000 people showed a third of women who are size 12 believe they are fat or overweight. It also showed that one in ten women hated their body. One in five women is also on a diet. The results show how unhappy women are with their bodies. Does this deep unhappiness over body shape stem from the size zero models seen walking down the catwalk? Or does it come from somewhere else?