Top fashion fine with English girl (6)
I believe the answer is:
fedora
'top fashion' is the definition.
(I've seen this before)
'fine with english girl' is the wordplay.
'fine' becomes 'f' (abbreviation).
'with' is a charade indicator (letters next to each other).
'english' becomes 'e' (abbreviation).
'girl' becomes 'dora' (girl's name).
'f'+'e'+'dora'='FEDORA'
(Other definitions for fedora that I've seen before include "Felt hat dented sideways" , "Felt hat dented lengthways" , "Felt hat, dented lengthwise" , "Read of (anag) - brimmed felt hat" , "Felt hat with a creased crown" .)