A fortune in clothing (3)
I believe the answer is:
lot
'a fortune' is the definition.
(as in a person's lot in life)
'in clothing' is the wordplay.
'in' indicates the answer is hidden within the clue.
'LOT' is hidden within 'clothing'.
(Other definitions for lot that I've seen before include "Item for sale at auction" , "Large amount - parcel of land" , "Destiny - biblical character - Polish national airline" , "Could there be many at the auction?" , "Chance; item for sale" .)