PARIS - It was the stuff of dreams: walking down a Paris street one day to walking the runway as a top 20 model in the world's fashion capital.

That's exactly what happened to Victoire Macon Dauxerre at 18 as she prepared to graduate from high school in 2011.

But that dream was short-lived.

In just a few months Dauxerre was battling anorexia, eating three apples a day and sipping diet colas in an effort to maintain her elite model status.

"No one actually told me you have to lose weight," she remembered. "But they said to me, 'In September, you're starting Fashion Week. Sizes will be 32-34 (2-4 US) and you'll have to be able to fit into them.'"

"That's when I should have left," Dauxerre said.

As Paris plays host to the spring summer haute couture shows, Dauxerre is warning the world about how insidious a disorder anorexia really is.

In her memoir, "Never Skinny Enough: the Diary of a Top Model" ("Jamais assez maigre: Journal d'un top model") she recounts the pressures of such high-stakes dieting.

This is not the first time that a French model has sounded the alarm on the pressure to be thin on the catwalk. After writing her own book highly critical of the fashion industry, Isabelle Caro posed for a shocking anti-anorexia billboard campaign during Milan fashion week in 2007 before dying from the disease three years later at the age of 28.

For Dauxerre, besides apples and Diet Cokes, she allowed herself one small piece of fish or chicken once a week.

A healthy 56 kilos (123 lbs) at 1.78 metres (5 feet 9 inches) when she was spotted, Dauxerre went down four dress sizes to 47 kilos (103 lbs) in just a couple of months.

She then embarked on her whirlwind career, modelling for such famed houses as Alexander McQueen, Celine and Miu Miu in Paris, New York and Milan.

Bulimic and suicidal

With her flowing brown hair and electric blue eyes, she became one of the most sought-after faces.

Eight months later, bulimic and suicidal, she quit.

"No one understood," Dauxerre said, now 23. "Everybody was telling me I had a dream life, but I had never been so miserable."

In the book, she tells of life backstage where models would nibble on food in front of cameras then race to the bathroom to throw it all up once journalists were gone.

She recalls shoots where only the photographers had catering. Dauxerre was so starved and exhausted at one point she fainted in the streets of New York during one fashion week.

"The models, they're nothing, they're just clothes hangers," Dauxerre said. "In the 1980s, elite models were real people. Today, you have to fade behind the labels."

Dauxerre's memoir comes a month after French MPs voted through a law banning ultra-thin models.

A letter by Dauxerre was read out in parliament and helped sway the vote.

The ban is only the second of its kind in the world after Israel passed similar legislation, while Spain, Italy, the UK and Denmark all have looser regulations against the practice.

Attempts at regulation have so far failed, however, in the United States and Belgium.

If the French law passes its final hurdles, models who want to work there will have to be cleared first by doctors.

Agencies who violate the law could face six months in jail and a EUR75,000 fine ($81,000).

Dauxerre applauds the ban, even though she feels it is "10 years too late." Such a measure, she said, would have clearly barred her from the runway.

"A doctor would have detected my weak pulse rate," she said. "He would have noticed that I was losing my hair, that I had osteoporosis, that I no longer had my period."

"When your complexion turns sallow, borderline green, it's pretty clear there's a problem," Dauxerre added.

Five years later, the former model still resents fashion houses and their "thin mandate".

"Creators only want androgynous body shapes. They don't want to rejoice in a woman's body," she claimed.