
[Not news to el Reg readers of course]
Even the imminent Ms. Hilton has a doppelganger in the form of a certain hotel in the capital city of a certain French speaking European republic.
True, assumed names used in the entertainment business are registered so as to prevent duplication, but that's strictly a private arrangement There's nothing stopping anyone from taking the name ... ah... "Sarah Bee". Or, for that matter, "Gordon Brown".
Indeed, I imagine that while the eminent Ms. Bee has few doppelgangers due to her uncommon surname, Mr. Brown probably has lots and lots and lots.
Besides, it's way too much fun to pretend to be someone (self-)important and thereby mock their pretensions; where there's a will, there's a way. Twitter vs. the hackers. Stay tuned for fireworks and feathers flying.