"The Goddess of Pop" (4)
I believe the answer is:
cher
'the goddess of pop' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for cher that I've seen before include "1987 Best Actress Oscar winner for "Moonstruck"" , "US singer; dear (Fr.)" , "Singer; dear (French)" , "Moonstruck star" , "US singer/actress - French river/department" .)