Cowardly, stylish doll (7)
I believe the answer is:
chicken
'cowardly' is the definition.
(chicken can informally mean cowardly)
'stylish doll' is the wordplay.
'stylish' becomes 'chic' (similar in meaning).
'doll' becomes 'ken' (I am not sure about this - if you are sure you should believe this answer much more).
'chic'+'ken'='CHICKEN'
Can you help me to learn more?
(Other definitions for chicken that I've seen before include "Reckless game" , "Proverbial road-crosser" , "Meat" , "Cowardly - young fowl" , "youngster" .)