Marks & Spencer is giving one of its flagship stores a £7 million makeover to boost flagging sales.
The refurbishment will create 60 jobs at the Holmbush Centre store in Shoreham.
Builders are installing new fitting rooms, flooring, lighting and changing the shop's layout.
Meanwhile, staff are being retrained and given smart cream and black uniforms.
The overhaul was ordered by new chief executive Stuart Rose, who has promised to make M&S stores less cluttered.
His priorities include reducing the clothes line, giving the stores a more contemporary feel and making choice easier for customers.
Barbara Morgan, commercial manager at M&S Holmbush, said: "We are revamping all of our lines, including menswear, womenswear, food, lingerie and beauty, but we will be focused particularly on textiles."
Fabrics is one area into which Tesco - the nation's biggest retailer with a neighbouring store at Holmbush - has yet to venture.
The contrast in the fortunes of the two retail giants has been marked in the past few years, with Tesco usurping M&S as the undisputed king of retail.
M&S is determined to win back its share of the market and has started to think carefully about people's shopping habits.
Holmbush store manager David Patrickson said the revamp would be "cutting-edge" and reaffirmed M&S's commitment to Shoreham.
The store, which employs 450 people, will continue to trade during the work, which is scheduled to finish by November 15.
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