Party clothes news boss creased (3-5)
I believe the answer is:
dog-eared
'creased' is the definition.
(thesaurus)
'party clothes news boss' is the wordplay.
'party' becomes 'do' (do is a kind of party).
'clothes' becomes 'gear' (I've seen this before).
'news boss' becomes 'ed' (I've seen this in other clues).
'do'+'gear'+'ed'='DOG-EARED'
(Other definitions for dog-eared that I've seen before include "Worn and shabby" , "Of book, with pages turned down at corners" , "Shabby with corners of pages turned down" , "Of book, having page corners turned down" , "Agree odd description of book with bent pages (3-5)" .)