Celebrities have become today's hottest fashion designers. Some of the most popular are Gwen Stefani with her L.A.M.B. clothing line, Sarah Jessica Parker and her Bitten fashion line, Jennifer Lopez, Kimora Lee and Baby Phat and Daisy Fuentes.  Some of these celebrity designers have managed to make their clothing lines more like a lifestyle, such as Kimora Lee's Baby Phat.  Gwen Stefani's L.A.M.B. clothing line has become a fashion force and an extremely popular fashion line.