They"re ravenous. They"re ruthless. They live in a strictly hierarchical, alpha-dog, eat-or-be-eaten world. No, it"s not a rerun of Wild America; it"s the world of dressed-to-the-nines Park Avenue heiresses, aka Bergdorf Blondes, botoxed to within an inch of their barely-into-the-third-decade lives. Our unnamed London-born heroine is New York"s favorite "champagne-bubble-about-town" and just as effervescent and exhilarating as a fine bottle of Dom Perignon. Blissfully self-interested and flush with the cheeriness that comes from being, well, flush, Miss Disposable Income 2004 sashays her way through New York society in search of the perfect P.H. (Potential Husband)-"Have you any idea how awesome your skin looks if you are engaged?"-and the perfect butt-shaping pair of Chloe jeans. Despair occasionally strikes when her latest prince turns into yet another toad, but it"s nothing an invitation to an uber-exclusive Hermes sale and a gallon or so of Bellinis can"t fix. She"s got the creme...