Chain stores are a lot like chain-smoking. They are as addictive as hell. That's why it's great to celebrate an independently owned establishment that has found success and is not the Gap. Carrying tried-and-true clothing lines like Flapdoodles as well as funky, pint-sized versions of clothes mom and dad wear, this North Dallas business does amazing business with its end-of-the-season sales, which reduce the price of its merchandise by as much as 75 percent. Its partner store--The Biz--has found a niche in pre-teen girls, those Britney Spears wannabes who must look cool but lack the body mass to fit into grown-up sizes.