>> reporter: she went from a struggling business owner to flourishing baker within months of the episode airing. and nine years later? >> our original fat witch. >> reporter: she is still on top. >> still our biggest seller. >> reporter: carol's daughter, a beauty store in new york city blossomed after being featured on oprah several years ago. >> we made the appearance on oprah and our website crashed. during the show we went from like four visitors to 17,000. >> reporter: carol's daughter was a $2 million company. after oprah's endorsement, today they're worth over $30 million. >> it is like getting the seal of approval. you know, like, oh, it must be a great brand because oprah likes it. >> reporter: for these women the oprah effect changed their lives and both agree, you can't get better advertising than that. >> i'm so grateful to oprah for showing me what success looks like. >> i cannot thank her enough. i don't have words. >> i think that is a good way to sum up oprah. there aren't words. she's just changed everything for so many people. really. >> economic impact is