Fodor's Expert Review Rigby & Peller

Many of London's most affluent women find their luxury lingerie (plus swimwear) here because the quality is excellent and the service impeccably knowledgeable—and perhaps because it's the Queen's favored underwear supplier and has provided maternity wear to the Duchess of Cambridge. Despite the upscale clientele, it's much friendlier than you might expect. Brands include PrimaDonna and Marie Jo as well as R&P's own line, and if the right fit eludes you, there's a made-to-measure service that starts at around £300. There are also branches in Mayfair, Chelsea, and St. John's Wood.