Fitting a new model tiara perhaps (6-4)
I believe the answer is:
tailor-made
'fitting a new' is the definition.
I can't tell whether this defines the answer.
'model tiara perhaps' is the wordplay.
'perhaps' is an anagram indicator.
'model'+'tiara'='modeltiara'
'modeltiara' with letters rearranged gives 'TAILOR-MADE'.
Can you help me to learn more?
(Other definitions for tailor-made that I've seen before include "Created for a particular purpose" , "Designed specially" .)