Prada, Coach, and Louis Vuitton are beckoning. Signature features and prominent logos are on her mind as she heads for the latest from her favorite designers. Sometimes that special woman can go shopping alone. But it serves a two-fold mission in a woman’s world to bring along a friend: she can share the joy of discovering the latest fashions, and she can spy on (perhaps even sabotage) her competition in the race to be chic. She hasn’t been studying Sun Tzu’s The Art of War, but the tactic of bringing in your enemy close enough to destroy…comes natural to the fashion maven.