I would want to hire myself! Why rely on someone else's style and fashion when you could design your very own! Give me the budget for a top seamstress and the time to gather my own materials and I would much rather design for myself!
Personally, I haven't found a fashion designer that designs a complete line that I would wear. There are aspects from each designer that I may or may not like, but I'm creative enough to pull off my own line and look that I would much rather like to wear than some one else's designs.
Lady GaGa and Madonna have basically done this. They both became their own best fashion designers. This is what launched their careers and individual styles!