Compile list of clothing brands

I'm building a database of clothing brands. I'd like to subscribe to all of their email mailing lists, but the first step is to get a list of brands that can be subscribed to. What I need from a freelancer is to build a comprehensive list of popular clothing brands available in the USA. They don't need to be sold in stores (can be online only brands), but ideally they'd be recognizable by U.S. consumers. Once you provide me the list, I'll take a look over it and confirm which brands we should subscribe to and which we should skip. Then I'll pass the list back to you and ask you to subscribe to the selected brands (I'll give you email addresses to use).