Ladies who reform become perfect examples (6)
I believe the answer is:
ideals
'perfect examples' is the definition.
(I've seen this in another clue)
'ladies who reform' is the wordplay.
'ladies' anagrams to 'IDEALS'.
Though, I'm not sure how the anagram is indicated.
'become' is the link.
Can you help me to learn more?
(Other definitions for ideals that I've seen before include "Ideas regarded as perfect or standards" , "Models; principles" , "Ladies (anag.)" , "High standards for ladies" , "Moral standards" .)