Star's allowance for party? (11)
I believe the answer is:
celebration
'party?' is the definition.
(thesaurus)
'star's allowance' is the wordplay.
'star' becomes 'celeb' (I've seen this before).
'allowance' becomes 'ration' (I've seen this before).
'celeb'+'ration'='CELEBRATION'
'for' is the link.
(Other definitions for celebration that I've seen before include "Revelry" , "Party" , "Festive honouring" , "The marking of a significant event" , "Festival" .)