Ornamental trim in blue for new wife (8)
I believe the answer is:
furbelow
'ornamental trim' is the definition.
(I've seen this before)
'blue for new wife' is the wordplay.
'new' indicates an anagram.
'wife' becomes 'w'.
'blue'+'for'='bluefor'
'bluefor' is an anagram of 'furbelo'.
'furbelo'+'w'='FURBELOW'
'in' is the link.
(Other definitions for furbelow that I've seen before include "Ornamental trim" , "superfluous ornament!" , "Flounce, frill" , "Bit of skirt" , "decoration for skirt, one gathered" .)