Fashions elaborate domes (5)
I believe the answer is:
modes
'fashions' is the definition.
('mode' can be a synonym of 'fashion')
'elaborate domes' is the wordplay.
'elaborate' indicates an anagram (an elaborate version of the letters).
'domes' anagrammed gives 'MODES'.
(Other definitions for modes that I've seen before include "Styles (in clothes, etc)" , "Fashions" , "Styles of domes" , "Ways - manners" .)