Hilton heiress (5)
I believe the answer is:
paris
'hilton heiress' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for paris that I've seen before include "Capital of France" , "Arc de Triomphe city" , "Prince of Troy - capital city" , "investment resulted from his action" , "European capital - Greek hero" .)