Appealing sartorial style displayed by English (4)
I believe the answer is:
cute
'appealing' is the definition.
(I've seen this before)
'sartorial style displayed by english' is the wordplay.
'sartorial style' becomes 'cut' (the way an item of clothing is designed**).
'displayed by' says to put letters next to each other.
'english' becomes 'e' (abbreviation).
'cut'+'e'='CUTE'
(Other definitions for cute that I've seen before include "Lovable" , "Sweet, attractive" , "Quaintly pleasing" , "Astute - lovely" , "winning" .)