But concerns over slowing growth materialized after the company reported declining foot traffic to Lululemon's U.S. stores. McDonald said that in the first quarter, U.S. store traffic was positive. Investor worries heightened in May when Lululemon's product chief Sun Choe departed the company for the top role at Vans, VF Corp.'s ailing skateboarding footwear and apparel brand. She won't be replaced and her responsibilities have been reassigned to the company's creative director. McDonald said there's no additional realignment planned among senior management. "This was our planned succession," he said.