Ran around clutching party dress (5)
I believe the answer is:
adorn
'dress' is the definition.
(I've seen this before)
'ran around clutching party' is the wordplay.
'around' indicates an anagram.
'clutching' means one lot of letters goes inside another.
'party' becomes 'do' (do can informally mean a party).
'ran' is an anagram of 'arn'.
'arn' enclosing 'do' is 'ADORN'.
(Other definitions for adorn that I've seen before include "Beautify - decorate - enhance" , "Bedeck" , "Embellish, decorate" , "dress" , "Festoon" .)