Dress up bride more elaborately (9)
I believe the answer is:
embroider
'dress up' is the definition.
(I've seen this before)
'bride more elaborately' is the wordplay.
'elaborately' indicates an anagram.
'bride'+'more'='bridemore'
'bridemore' anagrammed gives 'EMBROIDER'.
(Other definitions for embroider that I've seen before include "Embellish (with needlework?)" , "Dress up" , "Elaborate" , "stitch" , "Sew decoration onto" .)