Weight-watchers everywhere can breathe a sigh of relief. Contrary to their image as slim models of restraint, French women, it seems, really do get fat. According to a 2009 study published on Tuesday, 15.1 percent of France's women are classed as clinically obese, while a further 26 percent are overweight.

The survey, conducted by TNS Sofres Healthcare and Swiss pharmaceuticals company Roche, also pointed to similar trends among the male population, with 13.9 percent of Frenchmen obese and 38.5 percent overweight. The world has long marveled at the ability of the French population, and particularly its women, to remain thin in a country famed for its pastries, cheese and wine.

French author Mireille Guilano even published a diet manual in 2004 entitled "French Women Don't Get Fat," praising the eating habits of women who prefer to savour their food calmly and never snack between meals. But the reality is that over the past 12 years, the average French person has put on 3.1 kg (6.83 lb) and added a further 4.7 cm (1.85 inches) around the waist, the survey showed.