Clothes found by old Swedish-born actress (5)
I believe the answer is:
garbo
'swedish-born actress' is the definition.
(I've seen this before)
'clothes found by old' is the wordplay.
'clothes' becomes 'garb' (garb is a kind of clothes).
'found by' says to put letters next to each other.
'old' becomes 'o' (abbreviation).
'garb'+'o'='GARBO'
(Other definitions for garbo that I've seen before include "Old film actress" , "Famous film actress" , "film star? Yes and no" , "She sought solitude" , "Swedish film actress Greta" .)