The woman's wearing a hollow 'supporter' (8)
I believe the answer is:
adherent
'supporter' is the definition.
(thesaurus)
'the woman's wearing a hollow' is the wordplay.
'the woman's' becomes 'her'.
'wearing' means one lot of letters goes inside another.
'hollow' becomes 'dent' (I've seen this before**).
'a'+'dent'='adent'
'her' inserted within 'adent' is 'ADHERENT'.
(Other definitions for adherent that I've seen before include "supporter of party" , "Disciple, follower" , "Devotee" , "Weep" , "Person supporting" .)