It has pretty, understated French clothing: many items are timelessly perfect, like fine knitwear and feminine cotton tops. Prices are mid-range and worthy for the quality -- Ms. B. has been a stalwart of the fashion press for years. There are branches at 41 Marylebone High Street, Marylebone W1, 58-62 Heath Street, Hampstead NW3, and 35-36 Floral Street, Covent Garden WC2, which has elegant men's suits. Tube: S. Kensington.