Alice changed her name (5)
I believe the answer is:
celia
'her name' is the definition.
'alice changed' is the wordplay.
'changed' indicates anagramming the letters.
'alice' with letters rearranged gives 'CELIA'.
(Other definitions for celia that I've seen before include "Character in Tales from Shakespeare" , "Frederick's daughter" , "Daughter to Frederick" , "Rosalind's cousin" , "lady" .)