
The Wan-inspired women's clothing range will launch in the autumn and indicates a concerted effort by the supermarket to boost revenues outside its core food offering.
Sainsbury's Tu, which launched in 2004, trebled its market share between 2005 and 2010 to almost 3% of the clothing market by volume, according to research from Verdict, placing it in the top 10 UK clothing retailers.
The supermarket said Wan's range will reflect his philosophy of making the wearer feel confident and positive about themselves, regardless of size.
Luke Jensen, non-food managing director at Sainsbury's, said: "Tu clothing has become a major growth area for Sainsbury's, based on the concept of delivering style and quality, at affordable prices.
"Over the next few years, we will continue to dedicate more space to clothing, with new store openings and the development of existing sites. As we continue to grow and expand our ranges, we're delighted to bring Gok's unique talent, as a democratiser of style and fashion, to our millions of customers."
, pushing the supermarket to the status of best performer over the Christmas period.
Sainsbury's is also pushing hard on its green credentials, , and it is .
Wan said: "I can't wait to get started – this is a first for me. While I've styled thousands of women over the years, soon millions of women are going to be able to wear something I've created."