Clothes seem only half full length -- real daft! (7)
I believe the answer is:
apparel
'clothes' is the definition.
(synonyms)
'seem only half full length real daft' is the wordplay.
'seem' becomes 'appear' (synonyms).
'only half full length' means to take half the letters.
'daft' is an anagram indicator.
'appear' cut in half is 'app'.
'real' is an anagram of 'arel'.
'app'+'arel'='APPAREL'
(Other definitions for apparel that I've seen before include "Pod of peas" , "what's in the press?" , "Fancy gear" , "formal dress?" , "Real pap (anag) - clothing" .)