Feminists, look away! Fashion police in Japan want to "empower" women by persuading them to wear high heels, insisting the country's historic "kimono culture" has led to many women having poor posture.

The Japan High Heel Association is calling on women across the country to trade sensible shoes for a pair of stilettos, insisting that standing tall will give them 'confidence' - and improve their gait.

"Japanese women walk like ducks," said JHA managing director 'Madame' Yumiko at her plush Tokyo salon.

"They waddle along, pigeon-toed, with their bottoms sticking out as if they're bursting to use the toilet. It looks ghastly," she added.

In an apparent bid to improve this situation, the all-female organization charges thousands of dollars for etiquette lessons, including special classes where women are taught to walk correctly, and particularly in high heels.

Critics have branded the idea sexist and laughable, particularly as women are still battling against a deeply ingrained patriarchal culture that once expected them to pace three steps behind men.

Yet the "walking etiquette classes" are proving hugely popular: At JHA students pay 400,000 yen ($3,700) for a six-month course - and so far 4,000 have taken part, while similar lessons and schools are popping up nationwide.

The 48-year-old former ballerina blames the country's sartorial heritage for the posture problem.

"Chinese or Korean ladies don't have these problems," she said. "It's a result of Japan's kimono culture and shuffling about in straw sandals. It's ingrained in the way Japanese walk."

"But very few Japanese wear a kimono all day anymore. We should know about Western culture and how to wear heels correctly," Yumiko added.

The shift away from traditional Japanese clothes happened gradually from around the late 19th century but it has only been since the 1980s that stilettos have become a fashion staple.

This "call to heels" comes at a time when the West is experiencing a feminist fightback against diktats on how women should dress.

Hollywood star Julia Roberts went barefoot on the red carpet during the Cannes Film Festival in May - an act of rebellion after organizers caused uproar by ejecting women for wearing flat shoes at the previous year's event.

Last month more than 100,000 British people petitioned parliament in the UK, calling for a change to an outdated dress code law that allowed employers to require women to wear high heels in the workplace. The campaign, now backed by several politicians, was launched by a receptionist who was sent home by a firm for wearing flat shoes.

But Yumiko argues wearing heels will help "Japanese women become more confident".

She explains: "Many women are too shy to express themselves. In Japanese culture, women are not expected to stand out or put themselves first."

Her solution is for women suffocated by such strict protocols to simply "throw on a pair of heels," arguing the freedom it brings can unlock the mind.

Prominent Japanese social commentator Mitsuko Shimomura dismissed the idea as "nonsense" that most would laugh at.

She said: "There's no relationship between wearing high heels and women's power. It sounds crazy."