John Lewis said that up sales were down 2.8% to £44.3 million for the week to May 24.
John Lewis admitted that trade was tough but added that its fashion offer had once again come to the fore buoying the weekly results with sales up 4.8% against last year.
Girlswear and own-brand boyswear were both more than 20% up on the week and women's brands and footwear also performed well.
Dan Knowles, director of selling operations for region B, said that despite the tough climate the department store was still in a strong position and continued to gain in market share against its rivals.
He said: "My recent branch visits have given me huge confidence in [our] partners' drive and ability to deliver great availability, shop floor presentation, and industry-leading customer service. Our product offer, shops and service are the best on the high street, and we have every confidence that every partner will do their best to ensure we continue to outperform the competition."
John Lewis opened a new store at the Liverpool One shopping centre yesterday.