Fasten around the woman's uplifted bust (9)
I believe the answer is:
'bust' is the definition.
(I know that bust can be written as apprehend)
'fasten around the woman's uplifted' is the wordplay.
'fasten' becomes 'append' (to append is to fasten or attach).
'around' means one lot of letters goes inside another.
'the woman' becomes 'her' ('her' refers to a woman).
'uplifted' says the letters should be written in reverse.
'her' reversed gives 'reh'.
'append' going around 'reh' is 'APPREHEND'.
(Other definitions for apprehend that I've seen before include "Be terribly afraid" , "Fear - arrest" , "Recognise - arrest - suspect" , "Uneasily anticipate" , "Understand or arrest" .)