Dress up bride more fancy (9)
I believe the answer is:
embroider
'dress up' is the definition.
(embroider can mean to embellish)
'bride more fancy' is the wordplay.
'fancy' is an anagram indicator.
'bride'+'more'='bridemore'
'bridemore' anagrammed gives 'EMBROIDER'.
(Other definitions for embroider that I've seen before include "Elaborate" , "Do decorative needlework" , "Exaggerate" , "Embellish (with needlework?)" , "Sew; embellish" .)