Small and charming (5)
I believe the answer is:
elfin
'small and charming' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for elfin that I've seen before include "Small; impish" , "Describing Santa's helpers" , "Delicate, slight" , "Resembling one of the little people" , "Small, delicately-framed" .)