Gap Inc. (GPS) said another merchandising veteran will return to the company as it looks to turn around its tepid sales.

The retailer said Julie Rosen, a 15-year employee of the company, will return to lead product merchandising for its $2.4 billion upscale Banana Republic chain. She'll follow Mark Breitbard, who rejoined Gap earlier this year to head merchandising at Old Navy.

Like other retailers, Gap has been struggling as shoppers remain skittish about spending money during the recession. But the company's troubles started before that, when its attempt to appeal to a younger demographic with trendier clothes fell flat. The Banana Republic unit saw the steepest drop among Gap brands in March same-store sales at 16%.

Rosen held a similar role at Banana Republic during much of the 1990s and was also head of merchandising for the Gap brand before leaving the company in 2006. Since then, she has served as a strategic consultant to several retail brands including Nike Inc. (NKE).

"Julie is a tremendously talented merchant and leader who keenly understands our brand and customer," said Banana Republic President Jack Calhoun. "We're thrilled to have her back, especially during these challenging economic times for consumers where product differentiation and distinct assortments are so vital to a brand's success."

Breitbard, who had been president of the retail division at Levi Strauss & Co., returned as chief merchandising and creative officer at the Old Navy unit, which is trying to turn around the brand by targeting young mothers on a budget rather than fashion-conscious young women. He held various merchandising roles at Gap between 1997 and 2005.

Gap shares fell 2.8% to $16.47 in recent trading but have risen 23% so far this year.

-By Lauren Pollock, Dow Jones Newswires; 201-938-5964; lauren.pollock@dowjones.com