OPRAH, THE STORE: Although it's hard to believe, Oprah Winfrey has managed to find yet another opportunity for brand extension. Plans are under way for an Oprah store, to be located kitty-corner from her Harpo Studios in Chicago. No, the 4,500-square-foot space won't be Winfrey's break into fashion retailing, despite her current love of the designer world. Instead, the shop will sell merchandise now available at the Oprah Boutique on oprah.com, such as a beach tote or "bistro mug." A spokeswoman would only confirm plans are under way for the store. The store's name and opening date have not been determined. — A.W.