Statista is a good source. For example, one of their reports states that for global internet users, the largest percentage people of who have made online purchases (58
%) were in the fashion-related category.

Here's a good start on all ecommerce stats for apparel. https://www.statista.com/search/?q=apparel

To gain global e-commerce apparel information, you can explore various reliable sources that provide market reports and trends analysis. Here are a few suggestions:
1)Get market research reports from reputable market research firms such as Statista, IBISWorld, and Global Data.
2) Keep an eye on e-commerce platforms like Amazon, Alibaba, eBay, and Shopify.
3)Visit the websites of trade organizations that focus on e-commerce such as eCommerce Europe, and the Global E-commerce Association (GEA).
Information from reliable sources can help you build an accurate understanding of global e-commerce in the apparel industry.