Old comic, one noted for how he dresses (5)
I believe the answer is:
dandy
'old comic' is the definition.
(I've seen this before)
'one noted for how he dresses' is the wordplay.
I cannot really understand how this works, but
'one' could be 'an' (an apple is one apple) and 'an' is found in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for dandy that I've seen before include "one of stylish ways" , "Beau" , "Old comic" , "See 6" , "comic, 1937-2012" .)