Clothes with broader design (8)
I believe the answer is:
wardrobe
'clothes' is the definition.
(wardrobe is a kind of clothes)
'with broader design' is the wordplay.
'with' becomes 'w' (abbreviation).
'design' is an anagram indicator.
'broader' anagrammed gives 'ardrobe'.
'w'+'ardrobe'='WARDROBE'
(Other definitions for wardrobe that I've seen before include "Tall piece of furniture" , "Cupboard for hanging clothes" , "clothes collection" , "Costume department" , "Tall cupboard" .)