"Who's That Girl?" rapper (3)
I believe the answer is:
eve
'who's that girl? rapper' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for eve that I've seen before include "Adam & - -" , "Woman in a happy place" , "See 27" , "The night before a festival" , "First lady from the night before" .)