Beauty.com, which is a subsidiary of drugstore.com, has tapped fashion designer Jenni Kayne to create a bag that doubles as a cosmetics case or clutch.Customers receive the limited-edition designer bag, filled with 12 product samples from such brands as L???Occitane, Seikisho and Urban Decay, with a purchase of $75 or more on the Beauty.com Web site.The online beauty destination first partnered wi