"Let It Go" singer in "Frozen" (4)
I believe the answer is:
elsa
'let it go singer in frozen' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for elsa that I've seen before include "Big cat" , "Lioness (born free in Kenya)" , "Famous lioness" , "___ Schiaparelli, Italian-born French fashion designer d. 1973" , "Girl" .)