Loos who wrote "Gentlemen Prefer Blondes"
I believe the answer is:
anita
'loos who wrote gentlemen prefer blondes' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for anita that I've seen before include "Female" , "girl produced" , "-- Loos, US writer" , "- Loos (Gentlemen Prefer Blondes)" , "lady" .)