Lerner and Loewe musical
I believe the answer is:
'lerner and loewe musical' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for gigi that I've seen before include "Play" , "Movie" , "1958 film musical from a Colette novel" , "Musical, winner of nine Academy Awards" , "1958 film, winner of 9 Academy Awards" .)