Assumed it is to wear (3,2)
I believe the answer is:
put on
This clue is a double definition.
'assumed' is the first definition.
(synonyms)
'to wear' is the second definition.
('put on' can be a synonym of 'wear')
'it is' is the link.
(Other definitions for put on that I've seen before include "Donned" , "Don; mount (a play)" , "Apply (to a surface) - present (on stage)" , "Stage -- hoax" , "Assume < present" .)