Apparel is the largest merchandise category in terms of number of online retailers, with 209 retailers selling apparel and accessories goods in the 2019 Top 1000 largest e-retailers in North America. These retailers grew online sales more than 17% in 2018 and accounted for more than 30% of total spending on apparel goods in the U.S. last year. Here's an in-depth analysis of the category, including an overview of the leaders and fastest growers, category benchmarks on key categories and mobile data.