I haven't visited this shop yet, next time I'm downtown I plan to. I've seen it listed as carrying brigg umbrellas.
http://chicago.metromix.com/style/store/worth-and-worth-loop/135866/content
News flash!!! Beware of incredibly stale Metromix listing. W&W closed their Chicago store around 15 years ago (right before they closed their NYC store). Metromix....