Models of perfection unsettled ladies … (6)
I believe the answer is:
ideals
'models of perfection' is the definition.
(I've seen this in another clue)
'unsettled ladies' is the wordplay.
'unsettled' is an anagram indicator.
'ladies' is an anagram of 'IDEALS'.
(Other definitions for ideals that I've seen before include "Models of behaviour to aim for" , "Models; principles" , "Models, exemplars" , "Standards of perfection" , "Dreams" .)