"Pitch Perfect" star Kendrick (4)
I believe the answer is:
anna
'pitch perfect star kendrick' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for anna that I've seen before include "-- Wintour, editor" , "Massey, Sewell or Karenina" , "worth very little in India" , "Girl's name (palindrome)" , "Old foreign coin" .)