Online sales of clothing increased 22% year-on-year in February, the biggest growth since June 2013.
Clothing outperformed overall retail sales, which grew by 18% to £8.9bn during the month, according to the IMRG Capgemini eRetail Sales Index.
Menswear sales increased by 31% and accessories by 35% in February, compared with the previous year.
“The strong performance in clothing suggests retailer investments in breadth of range, flexible delivery and ease of returns may be paying off for this sector,” said Richard Tremellen, retail insight and data specialist at Capgemini.
Tina Spooner, chief information officer at IMRG, said: “It is evident the shift towards mobile devices continues, with smartphones accounting for over a third (34%) of mobile commerce sales during February.
“This is up from 24% in the same month last year, and reveals smartphones have taken an additional 10% share of UK mobile retail sales over the past year.”
Tremellen added: “February also saw the continued disparity between sales made via smartphones and tablet devices. While smartphones recorded a healthy 92% annual growth, sales made on tablets grew by just 11%.”