John Lewis fashion sales rose by 11.1% in the week ended 11 March, compared with the same week last year.
“The warmer weather drove an increase in sales of both menswear and womenswear, with casualwear clothing seeing the strongest demand,” the company said.
“Overall sales of womenswear were up 17.7% on last year and menswear sales were up 8%.”
Total sales across all categories, including electrical and home, were up 7% on the same week last year, to £76.5m.
John Lewis said it continued to see the influence of the different fall of Mother’s Day this year (26 March) compared to last year (6 March), with increases in sales of key gifting categories as the event nears.
Fashion sales for the six weeks since the start of John Lewis’s new financial year are up 1.8% on the same period in 2016. Home sales have risen by 0.3% during the same period, while electricals and home technology rose by 3%.