Makes footballers be quiet -- one's working inside (8)
I believe the answer is:
Here is my best explanation:
'makes' is the definition.
(fashioning is a kind of making)
'footballers be quiet one's working inside' is the subsidiary indication.
'footballers' becomes 'fa' (Football Association abbreviation).
'be quiet' becomes 'sh'.
'one's' becomes 'is' ('I' can be a synonym of 'one').
'working' becomes 'on'.
'inside' is an insertion indicator.
'is' placed around 'on' is 'ions'.
(Other definitions for fashions that I've seen before include "Trends and styles as in clothes" and "Styles or vogues".)