You shoulda seen the 20-somethings congregated around Book Soup on the Sunset strip last night (Monday, 9.13) to catch a glimpse of Paris Hilton, who paid a visit to the book store around 7 pm to sign copies of “Confessions of an Heiress: A Tongue-in-Chic Peek Behind the Pose” (Fireside). Men and women were looking to catch a peek through the window on the sidewalk, and a bunch of grungy guys were hanging around with digital cameras in the rear parking lot. Paris Hilton is just a rich ditz; people oohing and aahing her is a disease that really needs to be cured.