New dons loved wearing robes, perhaps (7)
I believe the answer is:
adorned
'wearing robes perhaps' is the definition.
(someone might be adorned in robes)
'new dons loved' is the wordplay.
'new' becomes 'n' (abbreviation as in New Testament NT).
'dons' means one lot of letters goes inside another (don means to wear or put on).
'loved' becomes 'adored' (adoring is a kind of loving).
'n' going within 'adored' is 'ADORNED'.
(Other definitions for adorned that I've seen before include "Put on finery" , "Decorated, bedecked" , "done up" , "Embellished, decorated" , "Bedecked while Don read" .)