Decorate bride more elaborately (9)
I believe the answer is:
embroider
'decorate' is the definition.
(I know that embroider is a kind of decorate)
'bride more elaborately' is the wordplay.
'elaborately' is an anagram indicator.
'bride'+'more'='bridemore'
'bridemore' is an anagram of 'EMBROIDER'.
(Other definitions for embroider that I've seen before include "Elaborate" , "Ornament with needlework" , "Elaborately sew" , "Sew; embellish" , "Add (fictitious) detail to" .)