The last time Jil Sander designed a collection – for spring/summer 2005 – she    used the softest cashmere, the finest cotton and the lightest silk. She    honed every item of clothing, cutting, draping and re-draping, tailoring and    fitting over and over until she was satisfied. Almost. And then she did it    all over again until, finally, she was ready to show the collection on the    catwalk at her light-filled showroom in Milan. She has been described as a    minimalist, but perfectionist would be a better description. When Jil Sander    makes clothes, she makes them to fit as comfortably, and look as perfectly    proportioned, as possible. She is interested not in fashion or trends, but    in what she describes as purity. Her clothes have never been showy, but for    those who could afford to spend £1,200 on a cashmere jumper, or more than    £2,500 on a leather jacket, they were the ultimate in discreet, elegant    luxury. 
  Five years on, she is back. Her name is absent from the label, which reads    simply +J, but the style, cut and unbearable lightness of the fabrics are    un-mistakable. The slightly military line of the coats; the narrow    shoulders; the supersoft, superlight down coats; the cashmere knits; the    precision-cut white shirts are all 100 per cent Jil. The only thing that has    changed is the price: £44.99 for a down coat, £24.99 for a shirt. Nothing –    not even the impossibly light and deliciously soft cashmere scarf that I    can’t quite put down – is more than £100. It doesn’t seem believable, but,    at 66, Jil Sander has discovered the high street. And the high-street    shopper, who has never previously been able to afford even the tiniest piece    of the Jil Sander dream, is about to be able to dress from head to toe in    her clothes. 
 On October 1 her collection of 40 pieces for men and 100 for women will go on    sale across the world at selected branches of Uniqlo, the Japanese    high-street retailer known for its cheap and cheery cashmere jumpers that    come in every colour of the rainbow. Tadashi Yanai, who founded Uniqlo 25    years ago and is now the richest man in Japan, told me, 'It is our    opportunity to offer innovative clothing to people who perhaps wouldn’t have    had the opportunity to experience this before.’ What Sander adds to the mix    is a huge amount of credibility. It means Uniqlo can develop tailoring,    dresses, skirts, shirts and take the brand beyond its comfort zone of    jumpers, fleeces and downy jackets. 
  For Sander there is a thrill in offering a utopian ideal of high-quality    clothing to the masses. 'I like the concept of basic clothes in a democratic    world,’ she said. 'Uniqlo reminds me of Apple computers; fantastic design    for everyone. And I like what is Japanese about Uniqlo, a strong sense of    tradition, the orderly approach to everything, great know-how and logistics.’ 
  Uniqlo’s parent company, Fast Retailing, has ambitions to be the world’s    biggest fashion retailer, a position currently held by Inditex, the Spanish    company that owns Zara (4,264 retail outlets in 73 countries, including the    Zara chain, with 1,292 stores). Under all its brands – including the New    York fashion label Theory, and the French brands Comptoir des Cotonniers and    Princess Tam-Tam lingerie, Fast Retailing has 1,974 retail outlets    worldwide, 866 of which are Uniqlo. It is the sixth-biggest apparel retailer    in the world according to the retail analyst Planet Retail, below Inditex,    H&M, C&A and Next. 
  At a press conference on September 3 Tadashi Yanai made aggressive claims,    announcing that by 2020 pre-tax profit from operations is targeted at one    trillion yen (£6.6 billion), with sales expected to be five trillion yen.    Current profit up to August 31 was estimated at 101 billion yen (£662    million) and sales were about 682 billion yen (£4.5 billion). 
  By then the company expects to have 4,000 Uniqlo outlets worldwide (Gap has    3,465). Yanai told me, 'Our dream is to be the number one apparel company in    the world by 2020.’ In the past he has talked about buying Gap or H&M to    achieve his aims. He recently offered one million yen (£6,555) and 30 days    additional paid holiday to the Uniqlo employee who comes up with the best    vision for the company for 2020.  
  Uniqlo achieves its low prices by the sheer volume it produces – eight to nine    million units of clothing every week at 70 tightly controlled factories,    mainly in China. 'To offer our customers high-quality products at the best    prices, we control all stages of the supply chain,’ Yanai said, 'from    product design through to final sale. This approach strives to cut    unnecessary processes by third parties. Our “code of conduct” for production partners    requires them to comply and provide decent working environments for all    factory workers. We monitor employee working conditions in these factories,    and in the event of any problems we make all efforts possible to resolve the    problems, together with management of the factories.’ 
  For Yanai, the link-up with Jil Sander was a necessary step in the expansion    of his brand. Up to now Uniqlo – in Britain at least – has been more of a    must-stop shop for men than for women. The two flagship stores on London’s    Oxford Street and Regent Street are bursting with raw energy and bright    colour. Despite the economic downturn Uniqlo’s British sales have increased    from £19.3 million in 2007 to £37.3 million in 2008. In 2007 it opened five    new stores and launched its website. In February it opened a concession on    Selfridges’ menswear floor in London. There are 15 stores, all within the    M25, and it hopes to expand into other parts of Britain soon. 
  When Uniqlo first launched in Knightsbridge in 2001, it didn’t get it right.    Everything, it seemed, was made of the same synthetic fleece and there was    little reason to return to the shop a second time. But after a long think,    the brand relaunched in Britain in 2007. 'They really looked at how to    position themselves,’ Mary Portas told me. 'I think the best part is the    men’s; it’s extraordinarily good; great product in a very utilitarian    environment with a big dollop of coolness about it. Every time I look at    basics, that’s going to be my benchmark.’ 
  Yet a collaboration with Uniqlo is a strange and almost unthinkable twist in    the career of one of fashion’s most innovative and uncompromising designers.    In November 2004 Jil Sander walked out on the company she founded in 1973.    Previously she had studied textiles, worked as a fashion editor, and opened    a shop in a Hamburg suburb in 1968 selling Sonia Rykiel and Thierry Mugler    along with some of her own work. She developed a cult following of women who    could not get dressed in the morning without their Jil Sander shirt, dress,    suit or coat. She also expanded into fragrances, her first launching in    1978, and cosmetics, menswear and accessories. She single-mindedly    controlled everything from the casting of the models in her shows to the    design of the shops. She had sold a 75 per cent share of her $200 million    empire to Prada in 1999, but promptly left as creative director six months    later after falling out with Patrizio Bertelli, CEO of Prada (and the    husband of Miuccia), who famously said that the brand was more important    than the designer. Proving him wrong, sales started to drop under an unknown    designer brought in to replace her, and in 2003 Sander agreed to return to    the helm. She and Bertelli came to blows again and she finally washed her    hands of the label in 2004, apparently retiring to tend to her extensive    gardens outside Hamburg, and travel the world. 
  Sander is one of the fashion world’s few truly private people, living a quiet    life in Hamburg. She does not have children and little is known about her    partner, but Sander says she spent her time away from fashion in Africa,    Iran, Russia, Israel and several Arab countries. 'Before that, I had been    too involved with my work; all I got to know were the hotels of most of the    capitals of the world,’ she said. 'Since my garden is my other passion, it    profited a lot from my new freedom. Whenever I can manage, I still steal    away to relax, working among the flower beds. It was a great joy to be the    master of my days, to spend as much time as I wanted with friends and    family. But I always considered that period as a phase of rest and    recreation, of summing up, but also of planning ahead. It is wonderful to be    back working, but sometimes I wouldn’t mind if the pace were less frantic.’